These wheels have a 3/4-inch aluminum hub with a 1/4-inch keyway. They come 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 on the output shaft of the AmpFlow gearmotor. A 1/4-inch key is also included with the 10-inch wheels. Order these wheels individually or combine them with the AmpFlow gearmotors.
| Wheel Diameter | Tire Width | Speed (MPH)* | Weight (lbs.) |
| 4 in. | 1.5 in. | 8.0 | 0.8 |
*Indicates the speed at which a vehicle would travel if the wheel was driven at 670 RPM by the AmpFlow E30-150-G gearmotor.0-AMPW-4