Colony colonial v2 cranks crank arm construction 25 piece design using single bolt design crank arm materials heat treated features crank arm construction 25 piece design using single bolt design crank arm materials heat treated colonized crmo tubular arms crank arm lengths 175mm length only drive side left and right hand drive compatible spindle unique heat treated 19mm 48 spline hollow crmo axle weight 1lb 11 9oz 790 g buy colony colonial v2 cranks from chain reaction cycles