Park Tool Tool Chain Checker Cc-4.2

About The Product

• 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
• 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 chains
• Designed to accurately indicate when a chain reaches 0.5%, 0.75%, and 1.0% wear