This is the replacement Complete Differential Kit for the Team Associated RC18T RTR racing truck FEATURES: Steel construction with plastic parts INCLUDES: Eight 2mm diff balls (ASCC0115 or ASCC0116 for carbide version) Seven 1.5mm thrust balls (ASCC0115) Two diff drive rings (ASCC0115) Three thrust washers (ASCC0115) One diff bolt (ASCC0115) One diff spring (ASCC0115) One short outdrive (ASCC0027) One long outdrive (ASCC0027) One dogbone spring cup (ASCC0027) One differential gear (ASCC0022) REQUIRES: Assembly following the kit manual COMMENTS: For the 8x12mm bearings order ASCC0106 kpm12/08/2004 ir/jxs