This is a set of four optional ST Racing Concepts 12mm Aluminum "Lock Pin Style" Wheel Hexes, and are intended for use with the Traxxas Stampede, Rustler, Bandit and Slash, as well as the Nitro Slash. With the popularity of the "Monster Energy" paint scheme, and the release of the Traxxas Monster Jam replica Grave Digger truck with green chassis components, STRC has stepped up and are now offering their popluar CNC machined aluminum components in green to help customize any green themed rig.
Using high quality CNC machined aluminum, these lock pin style aluminum wheel hexes lock down on the axle pins so loosing pins are no longer a problem for your Traxxas electric Stampede, Rustler, Bandit or Slash. Aluminum hexes are also more durable and less likely to strip out, providing a better fit to the wheel hex.