Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts Color:silver overall length 70mm (ball head

overall length 70mm (ball head and screws)

even more than one tank is driving at the same time they will not interfere with each other

In the experiment

we will send colors randomly

Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts Color:silver overall length 70mm (ball headParameters Name: The lastest aluminum alloy smart tank chassis driving wheel The weight: 30g Color: Golden and silver(optional) Material: aluminum alloy Type: including the 1pcs connector and 2pcs Bearing Bearing wheel diameter: 47. 2 mm Coupling: 38 mm Bearing wheel spacing: 20. 75 mm More details, please visit: https: github. com SmartArduino SZDOITWiKi wiki to download the source code and the documents. Shipping list All Metal bearing wheel : 1pcs