Park Tool Chain Wear Indicator (CC-3)

A worn chain shifts poorly and wears sprockets at an accelerated rate

The CC-3 is a Go / No-Go gauge designed to accurately indicate when a chain reaches 0.75% and 1% wear - the point at which most chain manufacturers suggest replacement

The chain should be replaced soon if the 0.75% side fits into the chain, before other drive train components also start to wear out fast

If the 1% side fits into the chain, the chain is worn out and should be replaced immediately

Made from precision, laser cut steel

Consider that if you replace a chain because of wear other vital drive-chain components may need to be renewed too

10-speed compatible