Traxxas 1951 Half Shafts, Long Truck (external-splined (2) & internal-splined (2) metal U-joints (4) Pair of long half shafts (external-splined (2) & internal-splined (2)/ metal U-joints (4) Replaces worn or damaged parts Use Traxxas stock and hop-up replacement parts to get the most out of you Traxxas RTR vehicles This product is made from high quality materials and designed for lasting performance This is for use on RC vehicles such as the Traxxas Nitro Rustler; consult your user's manual for exact parts listings