Wolf Tooth Direct Mount Chainring - RaceFace/Easton CINCH Direct Mount Boost 3mm Offset Requires 12-Speed Hyperglide+ Chain BLKThis chainring's tooth profile was developed specifically for Shimano's XTR 12 speed Hyperglide+ chain. Compatible only with Hyperglide+ 12 speed chains For use with any RaceFace CINCH crankset Maintains quiet and smooth performance of the Hyperglide+ drivetrain with exceptional chain retention Prevents premature ring and chain wear that can come from non optimized profiles Tooth Count 30, 32, 34 Drivetrain Speeds 12 Round or Oval Round Offset 3