Specially-designed 2WD/4WD back wheels with 12mm inside hex. The guts countersunk area was in reality redesigned to put the wheel nut deeper. Precision fit, ideal for high-competition competition. Produced from versatile, durable product to withstand effects. The interior connected with wheel is aerodynamic for optimum performance. Unique highlights of the wheel are noticeable through inside: reinforcement ribs to help make the tires as stable as you possibly can and expel deformation.