The shimano dura ace c60 carbon clincher front wheel features a wider rim to increase ride stability provide increased cornering ability on wider tyres and greater aerodynamic properties the shimano dura ace c60 carbon clincher front wheels wider rim is 50 mm deep with an alloy braking surface to create an incredibly fast straight line wheelset with trusted braking power the shimano dura ace c60 carbon clincher front wheel uses stainless steel butted straight pull bladed spoke