11.6218.030.290 - SRAM X-Sync 2 Eagle chainring, 1 x 12S, 34T, direct mount, 6 mm offset, narrow wide, cold forged AL. - 710845808562

11.6218.030.090 - SRAM X-Sync 2 Eagle chainring, 1 x 12S, 38T, direct mount, 3 mm offset, boost, narrow wide, CNC AL. - 710845787515

11.6218.030.080 - SRAM X-Sync 2 Eagle chainring, 1 x 12S, 36T, direct mount, 3 mm offset, boost, narrow wide, CNC AL. - 710845787508

11.6218.030.020 - SRAM X-Sync 2 Eagle chainring, 1 x 12S, 34T, direct mount, 6 mm offset, narrow wide, CNC AL. - 710845787447