Park tool CC-2 Chain Wear Gauge

Keep your drivetrain in top shape with the Park Tool CC-2 Chain Wear Gauge. This essential tool accurately measures chain stretch, preventing premature wear on expensive components like cassettes and chainrings. Its simple drop-in design provides quick, definitive readings at 0.5%, 0.75%, and 1% wear. Compatible with most 5- to 12-speed derailleur chains and many single-speed chains, it´s a must-have for home mechanics and pros alike. Replace your chain at the recommended wear levels to ensure smooth shifting and extend the life of your entire transmission