Specially-designed 2WD/4WD right back wheels with 12mm inside hex. The guts countersunk area was at reality redesigned to put the wheel nut much deeper. Precision fit, ideal for high-competition competition. Created from versatile, durable product to withstand impacts. The inner connected with wheel is aerodynamic for optimum performance. Original highlights for the wheel are noticeable through inside: reinforcement ribs to really make the tires as stable as possible and expel deformation.