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. The 1/4-inch key is also included. 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
5 in.	1.5 in.	10.0	1.0
6 in.	1.5 in.	12.0	1.2
8 in.	1.5 in.	15.9	1.9
10 in.	1.5 in.	19.9	2.4
12.5 in.	2.75 in.	24.9	3.4

*Indicates the speed at which a vehicle would travel if the wheel was driven at 670 RPM by the AmpFlow E30-150-G gearmotor.