Park Tool Chain Checker CC-4.2 drumbeat21-304 Good is never good enough

Good is never good enough for you

- MD - Palm Width 152mm - 162mm / Finger Length 160 -165mm

such as Giant RideSense or Trek Duotrap

our T-handle wrenches are strong and durable

HONEST DIGITAL SHOCK PUMP

Park Tool Chain Checker CC-4.2 drumbeat21-304 Good is never good enoughA 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