Park Tool Chain Checker CC-3.2

Take the guesswork out of chain wear using the Park Tool Chain Checker CC-3.2. The Chain Checker CC-4 is a go/no-go style gauge to measure chain wear accurately. The CC-3.2 is designed to accurately indicate when a chain reaches 0.5% (11 and 12-speed chains) and 0.75% (9 and 10-speed chains) stretch. Worn-out chains can affect your shifting and cause your drivetrain to also wear out quicker so keeping on top of your chain wear saves you money and watts! With the Park Tool Chain Checker CC-3.2 stay on top of your chain wear and keep your bike running smooth.