Description: These wheels are made of durable, light weight plastic. This is a kit of 8 wheels to be used in combination with our robotic tank track. To use these wheels with the tank track you need to mount each pair back-to-back, this way you leave enough space between the wheels to fit the tank track central rib.

They fit on any 3mm shaft but a larger hole can be easily drillied to interface other DC motors, gearbox or servos.

This kit contains a total of 8 wheels, for each tank track you need 4 wheels mounted in pairs.

Features:

• 39mm diameter
• Light weight
• Strong and durable plastic