This chainring's tooth profile was developed specifically for Shimano's XTR 12-speed Hyperglide+ chain.Compatible only with Hyperglide+ chainsFor use with Shimano XTR M9100, XT M8100, SLX M7100, and Deore M6100 series cranksetsMaintains quiet and smooth performance of the Hyperglide+ drivetrain with exceptional chain retentionPrevents premature ring and chain wear that can come from non-optimized profilesItem SpecificationsDefined ColorBlackDirect Mount TypeDirect Mount ShimanoDrivetrain Speeds12MaterialAlloyOffset3Round or OvalRoundTooth Count32 Wolf Tooth Shimano Hyperglide+ Direct Mount Chainrings Direct Mount Chainrings UPC: 810006800708