Shimano rx31 road disc rear wheelrx31 clincher disc road wheel offering all the technology of shimano wheels at an economical price features 24mm high profile aluminium rim for improved aero dynamics easy to use centre lock rotor mount for use with disc brakes 24 stainless steel butted and bladed straight pull spokes with a 2 cross lacing pattern improve lateral and torsional power transmission rigidity elbow less spokes with alloy nipples make for a strong yet compliant wheel the hub uses a