The CC-3.2 is a Go / No-Go gauge designed to accurately indicate when a chain reaches 0.5% and 0.75% wear - the point at which most chain manufacturers suggest replacement
Park Tool has been manufacturing bicycle specific tools since 1963. A long-term dedication to quality, innovation, and customer service has made Park Tool the first choice of professional and home bicycle mechanics around the world.
A worn chain shifts poorly and wears sprockets at an accelerated rate.
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.
Longer design measures a greater length of chain, giving greater accuracy.
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.
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