Compatible with 10, 11, and 12-speed 1x drivetrain systems Includes 24mm outboard BB with 3 spacers to fit 73 and 68mm BSA threaded frames 2 piece forged alloy crank arms with steel chainring and bolts Includes 32T steel 1x chainring 175x32 24mm BLK 76x4B 946g (w/BB) 1x10/11/12UPC/EAN/GTIN: 888571036334