TeacherGeek Accessories - Wheel-Hub SetThe TeacherGeek Wheel Hub Set is a versatile, dual function component pack that allows students to build either rotating wheels for vehicles or hubs for wind turbine blades and other rotating systems. Each wheel hub features a splined hole that enables a dowel to be pressed securely inside, creating a tight mechanical bond between the shaft and the rotating element. As wheels, students can attach the hubs to axles to build custom vehicles, using