This is the optional MIP Super Differential for the Associated 18T, MT, 18B and 18R. FEATURES: Hardened steel construction Replaces stock black plastic diff halves YOU WILL RECEIVE: One MIP Super Differential with clear paste for main thrust balls and washers and tube of red grease for small thrust balls, instruction sheet REQUIREMENTS: Installing on vehicle COMMENTS: For Rebuild Kit, order MIPC1445 jxs 5/17/05 ir/jxs &