4 in. Stealth Wheel, 3/8 in. Hex Bore, 35A Durometer

The inside black portion of this wheel is made from molded polycarbonate plastic. The outer tread is TPU (thermoplastic polyurethane) with a 35A durometer hardness. The green treaded stealth wheels are not intended for drive wheels, but are the perfect wheel for intakes and other auxiliary robot mechanisms. The bore of this wheel is a 3/8" hex hole, which is intended to be driven by a 3/8" hex shaft or spinning axle. There is a bolt pattern on a 1.875" diameter bolt circle for mounting sprockets, hubs, and gears.