Designed to fit any 96 Symmetric BCD Shimano Cranksets. These rings feature the patent pending Drop-Stop asymmetrical tooth design for the best in wear life, mud clearance, and chain retention. FEATURES : Features Wolf Tooth's Drop-Stop tooth design for maximum chain retention Drop-Stop chainrings are designed for use with 1x9, 1x10, 1x11 and 1x12 drivetrains Compatible with all 10-, 11-, and 12-speed chains, with the exception of Shimano 12-speed chains Shimano 12-speed chains require the use of Wolf Tooth's Shimano 12-speed specific chainrings If using a 9-speed drivetrain, use a 10-speed chain, which will provide a tighter fit for better chain retention Made from 7075-T6 aluminum for long life Chainline is 49mm Chainrings are threaded for standard M8 chainring bolts for no-nut installation SPECS : Color: Black Material: Aluminum Tooth Count: 32 Ring Position/Type: Chain Retaining Single Ring Drivetrain Speeds: 9 , 10 , 11 , 12 Defined Color: Black Chainring BCD: 96