Park Tool CC-4.2 Bicycle Chain Wear Checker

• TOOL Park CC-4.2 Chain Wear Indicator

A worn bicycle chain causes poor shifting performance and accelerated wear on drivetrain components; causing more expensive problems The Park Tool CC-4.2 Chain Checker is a drop-in style gauge that measures bicycle chain wear The laser-cut CC-4.2 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 13-speed derailleur chain (including SRAM® T-Type; SRAM® Flattop™; Shimano® XTR® 12-speed; and Campagnolo® Ekar™ 13-speed chains) or single-speed chain; and is designed to accurately indicate when a chain reaches 0.5%; 0.75%; and 1.0% wear; the points at which most chain manufacturers suggest replacement Some drivetrain manufacturers have unique recommendations specific to their components; always double-check to be sure Made in the USA and covered by Park Tool's legendary limited lifetime warranty