SRAM Eagle X-SYNC 2 Direct Mount Chainring Intense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer, runs quieter and further improves chain retention. Features Fully CNC Aluminum ring construction Eagle technology provides an expanded, optimum, gear range for 1x drivetrains X-SYNC 2 chainring design increases chain retention, wear life, and reduces friction and noise Designed to be used with Eagle 12-speed chains SRAM Direct Mount Compatibility SPECIFICATIONSMaterial Aluminum Round or Oval Round Direct Mount Type Direct Mount SRAM 3-Bolt Drivetrain Speeds12Offset3 | Sram | Eagle X-Sync 2 Direct Mount Chainring 30T Direct Mount 3Mm Boost Lunar Grey | Aluminum