1x Direct Mount Cinch Chainring - SHI 12Description If you're looking for a bomber new chainring that can run with your Shimano 12 speed drivetrain, then look no further. This direct mount ring has the versatility of RF CINCH integration and the stiffness to turn all your "push" into straight up "go". Features Built to Last Created from 4mm thick 7075 T6 alloy plate for big time stiffness and strength. Its NW tooth profile is SHI 12 spd specific and provides secure chain retention All Round