Park Tool CC-4.2 Chain Checker Presta so you can easily re-dial

so you can easily re-dial your fit and performance through the day

Their progressive lateral support

Made In The USA

Board Size 110 120 130 Weight Range 40-55 lbs

while an extended shell that covers the helmet rim improves durability

Park Tool CC-4.2 Chain Checker Presta so you can easily re-dialKeep chain wear in check The Park Tool CC 4. 2 Chain Checker accurately measures a long section of chain and comes in contact with the chain in three places, taking the guesswork out of judging chain wear. The tool works on any 5 to 13 speed chain or single speed chain and is designed to indicate when a chain reaches 0. 5%, 0. 75%, and 1. 0% wear. Product details Replacement guidelines Two sprocket (single speed) chains: replace chain at or just