This Single Wheel and Hub Set is the same one used in our Robot DC Gearhead Motor & Wheel Starter Kit . This Wheel and Hub set can be used with 6mm diameter shafts. Our hubs are designed for a 25mm long shaft, though they can accomadate longer shafts. 3mm tapped holes are available to tighten the hub to the shaft as well as attach the wheels to the hub. The wheel is 90mm in diameter (including the rubber tire).
Each Kit Includes
Wheel Plates & Hardware (makes one 90mm diameter wheel)