Park Tool Chain Checker CC-4.2 KIDS ROAD BIKES - Run time up to

- Run time up to 12 hrs

these gloves are touchscreen compatible

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

Series: Shimano Alivio M3100 Series

- CO2 inflator with 2 16g CO2 cartridges

Park Tool Chain Checker CC-4.2 KIDS ROAD BIKES - Run time up toA 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