To alleveiate poor shifting and uneven drivetrain wear, use the Park Tool Chain Checker to quickly and accurately determine the wear and stretch of any chain.
- Compatible with all derailleur chains
- Simply insert the Chain Checker's pins into 2 links, lightly press the swing arm gauge, then check the gauge window for an accurate reading
- For 9- and 10-speed chains, replace chain at or just before the 0.75% readings; for 11- and 12-speed chains, replace at or just before the 0.5% reading
- Check with manufacturer for specific replacement instructions
Made in USA.
View all Park Tool Bike Drivetrain Tools| Best Use | Cycling |
|---|---|
| Dimensions | 5.5 x 1 x .5 inches |
| Weight | .15 pounds |