SRAM X.5 GXP 9sp Crankset 175 Black 22-32-44 9 or 10-speed MTB crankset AL6061 forged aluminum crankarms 9-speed version has CNC machined AL7075 outer/steel middle and lower chainrings w/ X-glide technology 10-speed version has CNC machined AL7075 outer and middle/steel lower chainrings w/ X-glide technology Includes GXP (68mm or 73mm) BB Weight includes BB