A worn chain shifts poorly and significantly accelerates wear on sprockets and chainrings. The Park Tool CC-3.2 chain wear indicator helps you to see easily when it's time to replace the chain. It measures the elongation between 0,5 and 0,75%, which is the point where most chain manufacturers recommend a replacement.
· Suitable for single speed and 5-12 speed chains
· For 1/2" share
· Made from laser-cut precision steel