Park Tool CC-4 Chain Wear Indicator Apparel_Men's Tri Top Mounted on a steel backing

Mounted on a steel backing plate

Make every effort count with the SPEEDPLAY standard tension road cleat

providing options for every riding environment

Wet Lube is Finish Line's strongest

Park Tool CC-4 Chain Wear Indicator Apparel_Men's Tri Top Mounted on a steel backingThe Park Tool CC 4 Chain Checker is a drop in style gauge that measures bicycle chain wear. The laser cut CC 4 accurately measures a long section of chain and strategically comes in contact with the chain in three places, quickly and easily taking the guesswork out of determining when chain replacement is necessary. The tool works on any 5 to 12 speed derailleur chain (including SRAM T Type, SRAM Flattop, and Shimano XTR 12 speed chains) and is