CORONA SRAM X-SYNC 1X 30T 11V DM BOOST 3mm

-Designed specifically for SRAM's 1x11-speed (XX1) mountain drivetrain crank\r\n-CNC machined and hard anodized aluminum construction with X-Sync alternating wide/narrow tooth profiling\r\n-Compatible with 9-11sp 11/128" chains (not compatible with front derailleur shifting)\r\n-Offset: 0mm (SRAM BB30); 6mm (SRAM GXP); 3mm (Boost)\r\n-Weight: 71g. (32t/GXP)