Replacement tread for pro and s works carbon outsoles with replaceable lugs features heel lugs only standard high profile heel for road shoes sold in pairs includes screws specialized part numbers reference 6110 9161 black white 38 39 6110 9162 black white 40 41 6110 9163 black white 42 43 6110 9164 black white 44 45 6110 9165 black white 46 47 6110 9166 black white 48 49 for a comprehensive shoe spares guide please click this link shoe guide