This is the optional MIP X-Duty Rear CVD Kit for the Traxxas Slash 4X4. FEATURES: Steel construction Black in color INCLUDES: Two Female Bones Two Male Bones Four Couplings Four Drive Hubs Four Cross Pins Two 4x5mm Set Screws Eight Set Screws One MIP Decal Sheet REQUIRES: Installation at rear drive assembly lmm 07.20.10 ir/jxs