Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts Color:silver - Brushless motor mounting hole

- Brushless motor mounting hole minimum spacing 19mm

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

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overall length 70mm (ball head and screws)

Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts Color:silver - Brushless motor mounting holeParameters 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