DOIT 2pcs Metal Driving Wheel for Robot Tank Car Chassis, Action Wheel by Caterpillar Remote Control Toys Drive DIY toys kids 6 kg / cm (4

6 kg / cm (4

Price default packaging method: bag

1 x 400mAh 7

Ground mode:dazzle cool drifting

07 seconds (4

DOIT 2pcs Metal Driving Wheel for Robot Tank Car Chassis, Action Wheel by Caterpillar Remote Control Toys Drive DIY toys kids 6 kg / cm (4The metal bearing wheel is made by aluminum alloy. It has two colors: silver and golden yellow. By using it, can conveniently install your loved tank chassis. Silver 4mm: means the color for the wheel is silver, and the inner size for the coupling of the wheel is 4mm to connect the motor. Silver 5mm: means the color for the wheel is silver, and the inner size for the coupling of the wheel is 5mm to connect the motor. Silver 6mm: means the color for