- Light Damping balance Tank Robot Chassis Platform DIY suspension tank shock absorption SN3900 with cover
- it very light, weighs only 211g
- spring damping effect, it can press downward 0.7cm
- Small ,size: 9.7 * 18 * 4.5cm
- Motor is a universal motor 130, support 3-8v voltage (can be replaced with some other upgrade motor)
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