The specialized roval slx 23 alloy clincher 700c wheel rear the hand built low profile slx 23 is our best all around alloy wheelset a 17mm wide internal rim width provides a better tyre profile for incredibly precise handling an extraordinary wheelset for every application specialized roval slx 23 alloy clincher 700c wheel rear features rim type alloy clincher rim material alloy braking surface cnc alloy brake track height 9mm rim depth 24mm rim width 17mm internal 22mm ex