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1:16 Caterpillar Chain Track Pedrail Wheel For Arduino T100 T400 DIY RC Toy Tank Crawler Chassis Introduction: The caterpillar chain can be used to repair the broken track for the tank chassis, where, the plug can be extracted into many pieces. Specification: Name: caterpillar chain Material: plastic Product size: 1:16 (3818) Length: 78cm Package included: 2 x Caterpillar chains