Tools/Maintenance

Keep your brakes performing at their best with Avid's DOT 5.1 Brake Fluid. They're compatible with all Avid disc brake seals. You'll get a 4-ounce bottle of fluid.

This item contains 10 replacement plugs for the Blackburn Plugger Tubeless tool (sold separately), a one-shot tire plugging system for tubeless tires. It deploys in seconds to give a permanent fix for your flat.

- Lightweight, slim profile slips inside your pocket - Extra-rigid one-piece aluminum frame - One-piece aluminum frame & ultra-slim design - Hardened, forged and drawn chrome vanadium bits - Compact and superlight - Hardened, forged and drawn chrome vanadium tool bits - 3mm, 4mm, 5mm, 6mm Hex Keys & flat head screwdriver - 44g

Those guys who said "Tubeless tires never get punctures"? They lied. The Blackburn Plugger Tubeless Tire Repar Kit is a quick, one-shot tire plugging system for tubeless tires. It deploys in seconds to give a permanent fix for your flat. Mount it to your frame, tape it to your top tube, or strap it to your ankle like a shark knife. Just keep it close and it'll get you out of trouble. Pronto. - Stores ten plugs. - 27g tool only 47g tool with strap

• 10-function multi-tool • Aluminum frame • High strength chrome vanadium steel tools: 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm and 8mm Hex Keys, Torx T25, Philips, and bladed Screwdriver • 145g

• 12-function multi-tool • Slim, extra-rigid one-piece aluminum frame • Hardened, forged and drawn chrome vanadium tool bits • Highly resistant to round-out • Extraordinarily rigid, won’t distort under high torque • 2mm, 3mm, 4mm, 5mm, 6mm, 8mm Hex Keys, Torx T25, T30, bladed screw-driver, 10s chain breaker, and 14/15 gauge spoke wrenches

Why has no one invented a multitool that removes a chain quick link? Oh wait, Blackburn has. The Tradesman Multi-Tool has all the hex and Torx keys you're ever going to need in a portable tool, with the addition of a disc pad spreader and a tool that'll remove the most stubborn split chain links. - 18 functions - Quick link storage - Tools include: T25, T30, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm allens, disc brake pad spreader, flathead screwdriver and quick link chain tool compatible with 12 speed and fewer gears - 0.30lbs

What’s better than one plug? Two plugs. And why not add a P/V core tool since you’ll have to re-tubeless-ify an ailing tire anyway? The Pro Plugger expands on the success of the original Plugger - known for its double-wrapped plugs to seal real-world marring - and adds CNC alloy construction, an even more compact and convenient design, and still packs 5 refills into its pared-down and minimalist physique. Elegant? Of course. Smart? Indeed. Quickly accessible? Why yes - faster than bear spray. - 10 Plugs, Presta valve core tool, strap for top tube or seatpost - 2.24oz

- Only mini-tool available with a shock pump - Neoprene sleeve saves wear on jersey pockets - Hardened, forged and drawn chrome vanadium tool bits - 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm and 8mm Hex Keys, Torx T25 and T30, Schrader Valve adjuster, bladed and Philips #2 screwdrivers, 10s chain breaker, and 14/15 gauge spoke wrenches - 144g

A lubed chain is a happy chain Bontrager's proprietary chain lube is a true hybrid to ensure your chain stays clean, quiet, and efficient. The long-lasting formula lets you go longer between applications. Product details - High-performance chain lube works great in all conditions and riding styles - Proprietary formula is Trek's factory-recommended chain lube - Helps maintain clean, long-lasting, and efficient drivetrains - Pleasing berry scent - Apply after your ride and allow to dry to keep your drivetrain clean and contaminant-free - 4 fl oz (118mL) bottle is easy to use with a precise applicator tip - Also available in 0.5g/1.9L bulk bottle for easy and economical refills - Keep out of reach of children and do not ingest

A convenient all-in-one pack containing useful tire-change essentials. Flats happen. Make sure you're prepared with a Bontrager Flat Pack. Featuring the storage, inflation, and tire removal equipment you need to handle an emergency flat repair, this purchase also includes a coupon for a free Bontrager tube so you can get the right size for your bike and tires. Product details - Kit features everything you need to quickly fix a flat, including the seat pack - Includes Pro Small seat pack (non-QC) for quick and easy on-bike storage - Contents include: mini pump, three tire levers, and patch kit - Also includes coupon for a FREE Standard Bontrager Presta or Schrader inner tube

Securely stow a multi-tool, chain breaker, and master link in your fork’s steerer tube for quick and easy access when you need it. Securely stow your essential trail toolkit in your fork’s steerer tube with this clever integrated storage solution. The compression fitting replaces a traditional MTB fork's star nut and keeps an included multi-tool and more cleanly out of sight, yet always at the ready—and it doesn't require you to thread your fork! Product details - Easy tool access for quick trailside repairs - Bolted compression system securely holds tool and carrier - Compression install replaces the star nut fitting with no need to thread fork - Simple install with two bolt lengths and included spacers for customizing fit - Includes BITS Multi-Tool with hex keys, screwdriver, chain breaker, and storage for quick links - 2, 2.5, 3, 4, 5, 6, and 8mm hex along with T25 and flat-head screwdriver - Compatible with MTB forks with threadless headsets and non-carbon steerer tubes - Not compatible on forks with oval internal steerer tube shapes like the Fox 38

Buzzy's Slick Honey has a superior ability to reduce sliding friction, making it ideal for lubricating o-rings, seals, bushings, and any other sliding or pivoting parts. Try it on your bike and you'll see why major suspension fork manufacturers like Rock Shox, Fox Racing and White Brothers use Slick Honey in their service departments.

The ultimate trailside companion. This high-tensile steel multi-tool features a precise fit and finish and side grips for a secure handhold even with gloves on. The M5 includes: Hex wrenches: #3, 4, 5, 6 Screwdrivers: Phillips #2 Length: 89mm Weight: 85g Warranty: Lifetime

The ultimate trailside companion. These high tensile steel multi-tools feature a precise fit and finish and side grips for a secure handhold even with gloves on. The m10 includes: Hex wrenches: #2, 2.5, 3, 4, 5, 6, 8 Screwdrivers: Phillips #2, flat #2 Torx: t-25 Length: 89 mm Weight: 124g Warranty: Lifetime

- Shop quality tools use magnets to attach to the compact carrying frame - Features a CO2 inflator head and chain breaker - Driver bits attach to a 1/4" Driver on the Y-tool - Includes 2,2.5,3,4,5,6,8mm hexes, Torx T10 And T25, Phillips and flat screwdriver, spoke wrenches - 260G

Our Classic ORIGINAL chain lube is a liquid plastic and through polymerization forms long-lasting plating on all chain surfaces. - “Riding in” forms an extremely low-friction plating. - Plating bonds to chain; can’t be washed off! - Components stay cleaner, last longer, and run quieter. - Extremely durable, outlasts all other chain lubes! - Environmentally sensitive and saves money. - To be applied sparingly unlike many other lubes. Classic Lite and Original Bicycle Chain Lube (BCL) differ only in their concentration. Original BCL is more concentrated for exceptional durability under the most challenging conditions. The two formulas are compatible and may be used interchangeably. We recommend the Original Bicycle Chain Lube for mountain bikes, cyclo-cross, and more extreme conditions. You can confidently use Dumonde Tech’s Bicycle Chain Lube on all cables, pivots points, and seals. Safe on plastic, rubber, all seal materials. The product is designed to not harm your components. Eco-friendly and environmentally sensitive, our products are engineered to perform with minimal “carbon footprint” by not washing off in water, to use sparingly, lasts longer between applications, and your drive train lasts longer. Very good performer in the extreme cold conditions..

Fox High Performance Synthetic Suspension Fluid keeps any fork or shock operating at its best. - High performance suspension fluid formulated to provide fade-free performance - Proprietary additive eliminates stiction, friction and wear, and protects against foaming, seal-swell, oxidation and corrosion - 10-weight Red formula

Quickly fix whatever on-ride mishaps come your way with this astonishingly versatile pocket workshop. Packed with 16 individual precision CNC machined parts and a lightweight aluminium body, it's function rich, yet still jersey-pocket friendly - the perfect pocket companion for the open road or trail. - CNC'd steel tools - Ergonomic sides - 360-degree bit movement - Lock-tight sealed bits - Lightweight aluminium body - Width: 46mm - Length: 71mm - Weight: 110g Sixteen functions: - Hex key (mm): 2 | 2.5 | 3 | 4 | 5 | 6 | 8 - Spoke gauge: 13 | 14 | 15 | 16 - Phillips head: 2 - Torque: 25 - Mavic spline - Bottle opener - Chain splitter

Bicycle maintenance is often delicate, precision work. Having an ergonomic Allen wrench set or Torx bit set in the palm of your hand is an ideal resource for any mechanic. With these tools alone, installing bike accessories or making component adjustments is quick and simple. Available individually, or find them in our Team Edition and Ride Prep Tool Kits. - T25 / T27 / T30 Torx bit set - Ergonomic, overmolded rubber grip for comfort and precision - Durable polymer core creates a flex-free platform for confidently turning tight bolts - Hardened CRV tool steel maintains precise contact edges - Suitable for low and high torque adjustments on bicycle-specific components - Limited Lifetime Warranty

At the heart of every bicycle is flush-cut housing, and cleanly cut and crimped cables. The Cable and Housing Tool manages these tasks with precision and elegance. The cold-forged, hardened CRV tool steel arms and precision-faced cutting jaws, even the stiffest housing gets a perfect cut every time. The built-in crimper perfectly secures housing ferrules and cable end-caps, and a closure latch keeps the jaws protected when not in use. These cutter-crimpers are perfect for learning bike maintenance, or for veteran mechanics. Available separate, or found in our Team Edition Tool Kit - Squarely cuts even the stiffest compression-less housing - Cold-forged and hardened CRV tool steel arms prevent flex for easier cuts - Creates perfect cable cuts, preventing fraying or damaged ends - Precision-faced cutting jaws stay sharp and prevent cable and housing distortion - Crimping tool creates capped cables without risk of damaging ends - Closure latch keeps tool closed when not in use - Overmolded file tread handles promote comfort and control during challenging cuts - Designed to work on all types of bikes - Found in the Team Edition Tool Kit

Finish Line's Mineral Oil Brake Fluid is high quality to provide maximum fluid life and braking power. It features a super-low viscosity to yield superior lever response and pad retraction. Plus, it won't foam up even on long, challenging downhills.

Finish Line's DOT 5.1 Brake Fluid is a high-quality fluid for maximum life and braking power. It exceeds the most stringent 5.1 specs and is compatible/mixable with all DOT 3, 4 or 5.1 spec'd systems. It also features a super-low viscosity to yield superior lever response and pad retraction. Plus, it won't foam up even on long, challenging downhills.

- Hand-crank thread chaser for making custom length spokes - Strengthened high-speed steel die cuts stainless steel spokes - Die head included with threader

Ultra-compact polypropylene case. Kit includes machined aluminum T-handle with combined reamer and insertion tool and five tire plugs. - Weight: 48g

Combining style, technology, and ultimate value, the Rap II series bike multi tools provide unmatched performance at their price points. Engineered and manufactured in-house, these multi tools feature a number of innovative features including an integrated, machined aluminum CO2 dispenser. The ergonomic side-plates are machined from lightweight aluminum, anodized black, and offer a custom magnetic holder for an emergency quick-link. The steel tool bits are now longer and introduce our Black Anti-Corrosion technology, which provides superior corrosion resistance. There are seven available configurations featuring up-to-date options for all modern bicycles, including gravel bikes, mountain bikes, e-bikes, and road bikes. Compact and versatile, these mini tools are built to last and designed to efficiently get riders back on the road or trail. - Ergonomic forged aluminum side plates with link storage - Enhanced anti-corrosion black CRV bits wrapped - Chrome vanadium steel fastening hardware - Weight: 158g Tool bits: - Quick link holder - Hex 2/2.5/3/4/5/6/8mm - Torx T10/T25 - Phillips - Chain breaker - 8/10mm wrench, 4 spoke wrenches - Disc brake wedge - Rotor truing tool - CO2 inflator

- Specially formulated 10wt mineral-oil fluid for Magura hydraulic disc and rim brakes (Blue color)

Royal Blood mineral oil is a specially formulated, low viscosity hydraulic fluid that ensures consistent performance of Magura brakes. - Doesn't absorb water - Lubricates entire braking system

- Highly versatile dry weather chain lubricant - Deep penetrating, durable P.T.F.E. chain lubricant - Hold up to extreme conditions which can destroy ordinary lubes - Comfort bottle with pipette system for ease of use and application

- Ultra durable, long distance chain lubricant - Excel in long distance wet or muddy conditions - It penetrates deep into the chain links core to provide long lasting lubrication and total protection - Extreme pressure additives coat every part of the link to provide silky smooth gear change and ultra efficient drivetrain

- Paintbrush-like shape for easier application and cleaning

- Frees seized parts - Disperses moisture to prevent rust and corrosion - Provides light lubrication for moving parts - Reduces metal-to-metal contact - Prevents dirt adhesion - Cuts down on friction to improve component efficiency

- Creates a dry ceramic coating for increased durability and performance in dry condition - Excels in dry and dusty conditions - Biodegradable - Integral UV tracer dye and UV torch to aid accurate application and ensure total protection

Silicon Shine not only leaves your bike looking factory fresh, but it also acts as an amazing friction reducer for suspension parts and reduces dirt adhesion. Spray it onto your fork stanchions and rear shocks to reduce resistance for a silky smooth, World Cup performance. - Protects and leaves a sparkling shine on metal, plastic & rubber parts - Reduces friction on fork stanchions and rear shocks - Silicon formula prevents grime build up on treated surfaces - Cuts down on future cleaning and maintenance

Bike Protect is the ultimate liquid bicycle protection. Preserve and freshen your bike with Bike Protect's incredible water dispersing action! It's a perfect 'all over', after-wash corrosion inhibitor due to its extremely high oil content. This increased oil content creates the finest bike protection spray on the market. It drives out moisture and leaves a sparkling, non-sticky protective layer on your frame, drive chain, metal parts, and paintwork. It's ideal to spray onto your chain to drive out moisture before you apply any of the brilliant Muc-Off chain lubes. Bike Protect doesn't just disperse water after you've given your bike a good clean. It also prevents dirt adhesion between washes and reduces future maintenance time as well as helping reduce friction, wear, and energy consumption. - High performance formula leaves dry, non-sticky, protective film - Safe on frame, metal parts, plastics, rubber, paint, and carbon fiber - Drives out excess moisture - Prevents dirt adhesion - Light lubricant coats moving parts - Quick and easy to use - Aerosol Spray - Ideal for Road Cycling, Cyclocross, MTB, & Fat Bikes - Provides the ultimate performance in freezing conditions - For chains, cables, shifters, derailleurs, pedals, & cleats - Incredible durability - Pipette system for easy application

- Incredibly effective cleaning formula containing Nano Technology that also cares for your bike's delicate finishes - Contains no harmful acids, CFC's or solvents and is fully biodegradable - Cuts through dirt, oil and grime quickly and safely leaving your whole bike sparkling clean

Our Water Soluble Degreaser quickly and safely eliminates built-up oil, grease, and grime on metal, plastic, rubber, and seals. Its unique, biodegradable formula means that it can be quickly rinsed away with water to leave your greasy bike parts completely clean. Our R&D team put in the hours to make sure the Water Soluble Degreaser works on even the toughest of grime, including waterproof grease and chain lube residue! - Bio Formula easily cuts through tough grease - Can be used on chains, gears, and individual components - Water-soluble formula for easy cleaning - Works on tough, waterproof grease and chain lube residue - HazMat item not eligible for air shipment

- Fast and effective grease-cutting formula - Removes all chain oil and wax residue - Safely eliminates drive chain contaminants - Biodegradable - Ideal for use with chain cleaning devices - Trigger spray included for easy application on cassettes, chainrings and derailleurs - Safe for metal, plastic, rubber and seals

- Fast action bike cleaner - Readily biodegradable ingredients - Reduced carbon footprint with 94% less packaging - 100% plastic free packaging, 100% water free, 100% environmentally friendly ingredients, including plant based raw materials - Supplied in a compostable sachet and printed with vegetable inks - FSC recycled card box - Re-fill your old bottle and help reduce plastic waste - Dissolves easily in any type of water. Cold, warm and hot. Hard or soft - Safe to use all over the bike - Alkaline based and free from alcohol, CFCs, (EDTA), solvents or acids - Vegan & vegetarian friendly - -01: 4 sachets, 30g each - -02: Power Bundle: 4 sachets, 1x aluminum bottle, 1x bike clener spray trigger, 1x Silicon base for aluminum bottle

Park's FR-5G Cassette Lockring Tool fits most cassette lockrings from Shimano, SRAM, SunTour and SunRace. Made from heat-treated tool steel, the FR-5G features an extra-long splined body to prevent slippage and a guide pin to ensure the tool is in straight, preventing stripped lockrings. And, it can also be used to remove and install Shimano disc brake rotors. The FR-5G requires the use a chainwhip tool to prevent the cassette from turning during lockring removal.

The small and handy RR-12.2 Tape Measure features a tough composite housing with an integrated belt clip and both metric and SAE readings up to 350 centimeters or 12 feet. Measurement can be locked in place using the thumb lock or the handy quick-stop button. - Maximum length: 350 cm | 12 ft. - Markings: 1 mm | 1/32" (up to 6") | 1/16" (over 6")

• 12” Tungsten steel hacksaw blade specially designed to smoothly cut carbon composite handlebars, forks, seat masts, seat posts, etc. • Fits Park Tool SAW-1 Hacksaw and most 12” hacksaws • The CSB-1 is designed for use with the SG-8 Saw Guide. NOTE: Similar to a grinding stone, do not use this blade on aluminum

Keep your chain running smoothly with Park's Synthetic-Blend Chain Lube. It uses PTFE and a proprietary blend of oils to penetrate, reduce friction, prolong chain life, displace moisture and protect chains from rust and corrosion. Plus, it works great on cables, spokes, and derailleur and brake pivots, too.

Everyone wears out their Park Tool work stand clamp covers at some point. Find replacement covers for yours here. Each cover is constructed of soft, durable composite rubber. See below to determine which covers fit your Park Tool stand clamp: - 1002: fits 100-3X and 100-5X extreme range clamps - 1185: fits clamps on the repair stands PCS-9, PCS-10, PCS-11, and PCS-12 - 1259: fits 100-4X, 100-6X, 100-7X, and 100-15X clamps - 1960: fits 100-3D, 100-5D, and 100-25D Professional Micro Adjust Repair Stand Clamps - 468B: fits clamps with double cable reliefs, including 100-3C, 100-5C, 100-8C, 100-8Y, and 100-9C clamps - 467B: fits clamps with single cable relief, including PRS-2 through PRS-8 (for older-style clamps, non-current) - 468G: fits PCS-1 and PCS-2 clamps with double cable reliefs (clamp models: 100-1C, 100-1CA, and 100-2C) - 467G: fits PCS-1 and PCS-2 clamps with single cable relief (for older PCS-series stands only; not for current model stands) - 466: Rubber Replacement Clamp Cover Set (fits older clamps with plastic-dipped jaws)

Park's Cone Wrenches are made of durable tool steel and are nice and thin to fit on the small-clearance cones found on hubs and other bearing assemblies. Plus, they work as regular wrenches, too. They feature Park's special Y heads that put more material where it's needed for excellent durability and strength. Most applications require at least 2 cone wrenches. If you have questions please contact us and we can recommend the correct sizes for your needs.

Park's Hex Wrench Set offers all the popular Allen wrenches (1.5, 2, 2.5, 3, 4, 5 and 6mm) in a convenient fold-up unit. The tool tips are chamfered for a positive grip and the one-piece fiber-reinforced-resin handle is light, comfortable, slip resistant and 40% stronger than steel.

Because even your super-fast Mavic wheels will eventually need truing, Park designed the Spoke Wrench For Mavic Wheel Systems. This comfortable, vinyl dipped, two-sided spoke wrench is designed to easily access Mavic fittings. Plus, it fits both Mavic 9mm threaded eyelets and 5.65mm integrated nipples.

Park's Hex Wrench Set offers 3, 4, 5, 6, 8, and 10mm Allen wrenches with chamfered tips for a great grip and easy use. The one-piece fiber-reinforced-resin handle is light, comfortable, slip-resistant, and 40% stronger than traditional steel handles.

Park's AWS-8 Hex Wrench Set features Bondhus balldriver ends, which facilitate use when the tool is at an angle to the bolt. This is great for working in hard-to-reach areas, such as reaching water-bottle-cage screws. The AWS-8 has 4, 5, and 6mm wrenches, which are the most common bicycle bolt sizes. Plus, its Y shape and vinyl coating provide excellent leverage and comfort.

Park's Crank Puller is for removing crankarms on Shimano's splined, oversize, pipe-billet bottom brackets. It employs a long handle and a fine thread for the leverage and torque needed to remove tight arms. Park's unique rotating tip ensures smooth operation and long life. (The CCP-44 does not fit standard square or tapered bottom brackets.)

The 15-inch SWB-15 is a forged steel breaker bar with a 3/8-inch square drive head that pivots 180º. Features a long, knurled handle, which is extremely useful when extra leverage is needed to remove stubborn fasteners.

Designed and built to remove and install the direct mount lockring that retains front chainrings found on some Specialized, Cannondale and FSA modular cranks. - Fits chainring of Specialized, Cannondale and FSA - For lockrings with 47–48mm outside diameter and 4 or 8 notches - Fits both 4 notch (FSA and Cannondale) and 8 notch (Specialized) lockrings - 36mm hex drive to be used with Park Tool TWB-36 Crow Foot and a torque wrench to properly measure torque - Constructed of 4140 heat-treated steel and plated for long life

Park's Torx Wrench Set is just what you need to make repairs on many of your bike parts that use Torx (star-shaped) fittings, such as disc brakes, pedals, chainring bolts, and others. It offers the common bicycle wrench sizes (T7, T9, T10, T15, T20, T25, T27, T30 and T40) in a convenient fold-up set. Its composite handle is super strong, comfortable to use and slip resistant.

Park's Side Cutter Pliers are professional quality, 7-inches long, and made from heat-treated, forged chromoly steel for crisp, easy cuts and durability. They boast soft-touch, dual-density handles for an excellent grip, too.

Once you try on Park's Heavy Duty Shop Apron, there's no going back to standard aprons. The SA-3 is made from heavy 10-ounce cotton canvas and has two rows of bar tack reinforced pockets for stashing pens, parts, tools, etc. The special crossback design removes pressure from the neck for all day comfort and a nylon quick release makes the apron easy to adjust and take off. This sweet apron is a full 35-inches in length and the bottom 7-inches of the apron can be snapped up for a custom height fit. Plus, an embroidered Park Tool logo makes the apron as good looking (even when it's dirty) as it is functional.

Park's Shop Hammer is designed specifically for use on bicycles. It features a unique dual-sided head with both steel and plastic striking surfaces, a reinforced fiberglass shaft and a soft, comfortable molded handle. The HMR-4 proves that sometimes a hammer is the best tool for the job.

This combination chain whip and freewheel / lockring remover wrench is heat treated to prevent bending and flexing, with a molded handle for comfort. - 1/8-inch model works on 1/8-inch chains and sprockets - 1-inch (25.4mm) box-end wrench fits Park Tool Freewheel/Cassette Lockring Tools - Features hardened pins to keep the chain in place

A professional quality shop chain tool that works on 5-speed to 12-speed Road and Mountain Bike derailleur chains*, including SRAM AXS 12 speed, as well as 1/8-inch and 3/16-inch chains. The CT-3.3 features an adjustable locating shelf so it works on any width chain to remove and install chain rivets. Built to last and easy to use, the CT-3.3 features a comfortable handle, investment cast steel body and replaceable driving pin (#CTP). *The CT-3.3 will install, but not peen, Campagnolo 11 and 12-speed chain rivets. - Comfortable T-handle - Replaceable driving pin (CTP) - Investment cast steel body - Adjustable locating shelf

A fast and convenient tool to remove and install 12-spline Shimano/SRAM style cassette lockrings, as well as similar lockrings on rotor discs. The FR-5H features a modified FR-5 tool that allows use without removing most quick release skewer nuts. The removable, threaded steel handle makes it possible to replace a worn or damaged head. - Fits Shimano, SRAM (including 1x), SunRace, SunTour, Chris King and other cassette lockrings - Also fits some Shimano disc brake lockrings

Accurately gauge the straightness of disc brake rotors while the wheel is mounted in a TS-2.2 or TS-2 Professional Wheel Truing Stand (each sold separately). Park Tool's Rotor Truing Gauge features an infinitely adjustable, finely threaded indicator gauge. It works with any diameter brake rotor.