Park Tool Chain Checker CC-4.2 drumbeat21-304 HONEST DIGITAL SHOCK PUMP

HONEST DIGITAL SHOCK PUMP

Extra plush Coolmax padding

The eight included sizes encompass every size of star driver fastener likely to be found on a bicycle

Good is never good enough for you

Park Tool Chain Checker CC-4.2 drumbeat21-304 HONEST DIGITAL SHOCK PUMPA worn bicycle chain causes poor shifting performance and can actually wear out 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