Give your Traxxas Stampede a higher and wider stance using these 14mm clamp style aluminum wheel hex (which allow the use of Larger wheels and tire combos) Using high quality CNC machined aluminum, these clamp style aluminum wheel hex locks down on the axle pins so loosing pins are no longer a problem for your Traxxas electric Stampede. aluminum hex are also more durable and less likely to strip out and provides a better fit to the wheel hex.