SRAM X-SYNC 1x chainrings provide the highest level of performance and durability. The SRAM X-SYNC tall square teethe edges engage the chain earlier than traditional triangle shaped teeth. The sharp and narrow tooth profile, as well as rounded chamfer edges, help manage a deflected chain. To provide the best possible performance in muddy conditions, the X-SYNC chainrings have been designed with mud clearing recesses for the inner chain links and rollers. Engineered in Germany, X-SYNC rings are an integral part of the SRAM 1x drivetrain. Accept no imitations. Features: SRAM X-SYNC wide-tooth, narrow-tooth chainring technology provides maximum chain control Laser-etched chainring finish is more durable X-Range gearing technology gives you more range and a smoother gear progression, so you're always in the right gear Improved aerodynamics for time trial and triathlon MODEL ID: CR-XSNC-DM-D1Vendor Item#: 00.6218.026.000 (38T)00.6218.026.001 (40T)00.6218.026.002 (42T)00.6218.026.003 (44T) 00.6218.026.004 (46T)