The Omega Crankset is where fashion meets function, combining sleek styling with robust industrial design elements. Die cast aluminium crank arms Fits Shimano and SRAM 10-11 speed systems Length - 165mm,170mm, 172.5mm, 175mm BCD - 120/90mm MegaExo 19mm spindle 42T Direct-mount ring Painted bead blasted black Printed graphics 968g