VÉRIFICATEUR DE CHAINE CC-4

The laser cut CC-4 accurately measures a long section of chain and strategically comes in contact with the chain in three place and is designed to indicate when a chain reaches .5% and .75% wear, the points at which most chain manufacturers suggest replacement. It works on any 5 to 12-speed derailleur chain. A worn chain will cause poor shifting as well as accelerate drivetrain wear.