Traxxas 5334R Upgraded Axle Carriers (pair) Axle carriers Includes left and right Use with larger 6x13mm ball bearings)/ bearing adapters (for 6x12mm ball bearings) (2)/ dust boot retainers (4) 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, consult your user's manual for exact parts listings