SRAM Crank Arm Assembly Force D1 Dub 172.5mmSRAM Crank Arm Assembly Force D1 Dub BB SPIDER CHAINRINGS NOT INCLUDED Sleek Force AXS graphics on a carbon fiber arm: these crankarms are winners. The 8 bolt interface will fit any SRAM AXS spider or integrated chainring, with or without power, and comes in DUB and GXP spindle interfaces. Features: 8 bolt interface compatible with power and non power AXS spiders and integrated chainrings Available in DUB and GXP spindle options Carbon fiber arms with