BS903-012 Plastic Wheel Hex w/ Pin (4pcs ea.)(for use with 4mm threaded axles only)
Vehicle Compatibility: Caldera 10E, Earthquake 3.5, Ground Pounder, Aftershock 3.0, Aftershock 3.5, Aftershock 8E, Caldera 3.0, Caldera SC 10E, Caldera XB 10E, Earthquake 3.0, Reactor RS 3.3
