This is a pair of Traxxas Aluminium Steering Blocks.These are designed to improve the appearance, durability, and control on the Traxxas 2WD electric trucks such as the Rustler, Slash, and Stampede.Add the included 5x11 rubber sealed ball bearings to the brilliant-blue anodized machined billet 6061-T6 aluminium, and you have a recipe for awesomeness.