These are the optional Team Integy Universal Drive Shafts for the 2 Wheel Drive Traxxas Stampede and Rustler XL5 and VXL series. FEATURES: Steel construction Black in color INCLUDES: Two Universal Drive Shafts REQUIRES: Installation on the vehicle SPECS: Total Length: 125mm (4.92") Diameter: 6mm (0.24") cnh 9/4/08 ir/jxs updt jxs 09/23/11