Traxxas 4147X 5mm Blue-Anodized Aluminum Nylon Locking Nuts (set of4) Set of four 5mm nuts Nylon locking Blue-anodized aluminum 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 replacement hardware for use on Traxxas vehicles, consult your user's manual for exact parts listings.