Wolf Tooth Cinch 12-Speed Chainring Ring Ding Dong Shimano's new XTR 12-speed Hyperglide+ chain works a little differently than any other chain on the market. In order to ensure perfect operation, Wolf Tooth developed a completely new tooth profile to provide optimal chain retention and durability when using the new chain technology. Features The new HG+ chain interacts with the chainring much differently than a traditional wide/narrow design. Wolf Tooth engineers spent time understanding how the system works and designed a new tooth profile that is optimized for this system. Engineered proprietary tooth profile maintains the quiet and smooth performance of the HG+ drivetrain with legendary Wolf Tooth chain retention. Prevents premature ring and chain wear that can come from non-optimized profiles. Specifications Compatible with Shimano 12-speed Hyperglide+ chains Compatible with Race Face Cinch cranksets Material: 7075-T6 Aluminum | Wolf Tooth Components | 12Spd Chainring 32T, Boost | Aluminum