This is a pair of Tires and Wheels for the Traxxas X-Maxx Monster Truck, TRAD75** FEATURES: Tires glued to wheels, ready to install Tires molded from rubber with aggressive all-terrain tread Molded plastic wheels, matte black in color INCLUDES: Wheels, TRAC7771 Tires, TRAC7770 Foam Inserts SPECS: Width: 4" (102mm) Diameter: 8" (203mm) Hex Size: 24mm