4-inch Drive Wheel with 3 4-inch Keyed Hubs

This wheel has a 3/4-inch aluminum hub with 1/4 and 3/16-inch keyways. It comes with two steel discs for holding the wheel in place on the end of a 3/4-inch shaft. This makes it easy to mount these wheels directly onto the output shaft of an AmpFlow gearmotor. The bore diameter is 3/4-inch. The width of the tread is 1.5 inches These rugged wheels are ideal for robotics and other industrial and mobile applications. Other sizes, including 3, 4, 5, 6, 8, 10, and 12.5-inch wheels, are also available. Search Amazon for "BattleKits Wheels" or "AmpFlow Wheelmotors"