This chainring's tooth profile was developed specifically for Shimano's 12-speed Hyperglide+ chain to maintain quiet and smooth performance of the Hyperglide+ drivetrain with exceptional chain retention.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 profilesManufactured in Minnesota using premium 7075-T6 aluminumItem SpecificationsColorBlackDefined ColorBlackDirect Mount TypeDirect Mount ShimanoDrivetrain Speeds12MaterialAluminumOffset0Round or OvalRoundTooth Count32Weight66 Wolf Tooth Shimano Direct Mount Chainring for Hyperglide+ Chain Direct Mount Chainrings UPC: 810159402729