Black Rhino Avenger 1.9" Internal Beadlock WheelsNotes: Installing on Traxxas TRX 4 trucks requires the RC4WD 12mm Wheel Hex Conversion for Traxxas TRX 4 (Z S1844) Due to many different methods to design tires and wheels, RC4WD has no control over other manufacturers products, so they can only tell you that RC4WD tires and wheels work together. In some cases, their wheels and tires will work with other brand wheels and tires, but they can not guarantee the outcome. Includes: 4x RC4WD Black Rhino