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This guide is for cyclists and mechanics who want to accurately measure chain wear and extend the life of their drivetrain components. The Park Tool Chain Checker (CC-3.2) provides a simple "go/no-go" measurement of chain stretch, preventing premature wear on your cassette and chainrings. Note that this tool is specifically designed for 9, 10, 11 and 12-speed chains.
| Model Part Number | 320667 |
|---|---|
| Brand | Park Tool |
The CC-3.2 is used to accurately measure chain wear and determine when a chain needs to be replaced.
The CC-3.2 is compatible with 9, 10, 11 and 12-speed chains.
Insert the appropriate end of the gauge (0.5% or 0.75%) into the chain. If the gauge fits, the chain should be replaced.
These percentages indicate the amount of chain stretch. Replacing the chain at these points prevents damage to other drivetrain components.
A worn chain causes accelerated wear on sprockets and chainrings, leading to the need for more frequent and costly component replacements.
Wipe the tool clean with a rag after each use. Avoid using harsh chemicals.
The Park Tool Chain Checker is made in the USA.
Ensure you are using the correct end of the gauge (0.5% or 0.75%) for your chain type. If the chain is new, the gauge will not fit.
While the gauge indicates chain wear, other drivetrain components may also be worn. Inspect the cassette and chainrings for wear.
Setup:
No setup is required. The Park Tool Chain Checker is ready to use out of the package.
Compatibility:
This tool is specifically designed for use with 9, 10, 11 and 12-speed chains.
Care:
