Stub axle carriers, Rustler/Stampede/Bandit (2), 6061-T6 aluminum (blue-anodized)/ 5x11mm ball bearings (4) Traxxas aluminum stub axle carriers add both strength and beauty. In addition to the durability and precision of the machined billet 6061-T6 aluminum, larger 5x11mm ball bearings are included for smooth performance, reduced friction, and long life. Rubber seals on the bearings make them virtually maintenance free. Easy, bolt-on good looks in red, blue or green anodizing. Use Traxxas stock and hop-up replacement parts to get the most out of your Traxxas RTR vehicles. This product is made from high quality materials and designed for long-lasting performance. This is replacement hardware for use on Traxxas vehicles; consult your user's manual for exact parts listings.