Wheels, aluminum (blue-anodized) (2)/ 5x8mm ball bearings (4)/ axles (2)/ rubber tires (2) Machined Aluminum Ball Bearing Wheels with Rubber Tires: Traxxas now offers an impressive set of red and blue-anodized machined aluminum wheelie bar wheels with rubber tires. The precision 6061-T6 aluminum wheels feature a stunning anodized finish and they ride on rubber-sealed 5x8mm ball bearings. For controllable and seemingly never-ending wheelies, Traxxas developed a durable, soft compound rubber tire that reduces side-to-side movement for stable, consistent wheelies. The rubber tires are available separately and they also install on the stock nylon wheels. 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.