Replacement tread for trivent pro and s works carbon outsoles with replaceable lugs features standard high profile heel for road shoes heel lugs only sold in pairs includes screws specialized part numbers reference 6119 9101 red white 38 39 6119 9102 red white 40 41 6119 9103 red white 42 43 6119 9104 red white 44 45 6119 9105 red white 46 47 6119 9106 red white 48 49 for a comprehensive shoe spares guide please click this link shoe spares