Park Tool Chain Checker CC-4.2 KIDS ROAD BIKES An oversized hook and loop

An oversized hook and loop cuff blocks out the cold

- Run time up to 12 hrs

The PRO Discover Aero Carbon Handlebar is built to facilitate exploration

Micro-USB rechargeable - Charges via any standard USB port (charging cable included)

Lumen Output: 1200

Park Tool Chain Checker CC-4.2 KIDS ROAD BIKES An oversized hook and loopA 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