Sram Eagle X-Sync 30T 12 Speed Direct Mount Chainring is a result of extensive testing by SRAM’s engineers. They carefully studied the performance and wear rate of thousands of these chainrings, even subjecting them to repeated environmental and mechanical torture! The result is a component that matches up with the Eagle™ drivetrain\'s awesome performance in all conditions. SRAM has produced a unique and highly effective tooth design for this chainring. Taller and with a positive rake, these teeth increase chain retention and pedalling efficiency whilst reducing friction, noise, and wear and tear.Sram Eagle X-Sync 30T 12 Speed Direct Mount Chainring FeaturesForged and machined aluminiumAnodised finishChainline: 49mmDirect mounting systemDesigned to be used with Sram Eagle chainSize: 12 Speed, 30T