DOIT Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts RC Plane Quadcopter Balanced current:300mah/cell

Balanced current:300mah/cell

Now we can deliver goods normally

so we will send you the extra battery by special battery channel if you select the boat with 2 battery

5V AA battery (Not Included)

DOIT Aluminum Alloy All-metal Caterpillar Bearing Wheels Roller Tank Bear Tyre Tire Track Crawler Caterpillar Chassis Toy parts RC Plane Quadcopter Balanced current:300mah/cellName: 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. All Metal bearing wheel : 1pcs 1. Due to computer