SRAM -
Intense study of chain and chainring wear patterns led to the radical tooth profile that lasts longer, runs quieter and further improves chain retention. 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 Material: Aluminum Round or Oval: Round Color: Black Chainline/Hub Compatibility: 135/142 MTB Hubs , 150/157 DH Hubs , 170/177 Hubs Direct Mount Type: Direct Mount SRAM Material: Aluminum Tooth Count: 30 Ring Position/Type: Single , Chain Retaining Single Ring Drivetrain Speeds: 12 , 11 , 10 Defined Color: Black Chainring BCD: Sram Direct Mount Offset: 6