We Recommend to buy  the original DC Motor Driver & Controller for this robot (it sold separately)  Find it Here The robust "Wild Thumper" 6WD All Terrain Chassis for robotic applications is made from 2mm thick anodized aluminum plates with stainless steel and nickel plated brass fittings. Custom electronic boards and sensors can be mounted easily on the many 4mm holes which are arranged in a 10mm grid. The Wild Thumper is equipped with 6 powerful steel gearbox motors (1:35 ratio, 4kg/cm stall torque per Motor), spiked tractor tyres and a "Super Twist" suspension system to keep all wheels on the ground. This chassis will let your robot go almost anywhere in rough terrain and drive over obstacles.The platform is perfect for robotic developers and student projects. Between the wheels are two large Battery compartments which can hold up to 4 x 7,2 V RC Car sub C Battery Packs. Specifications: • Dimensions: (L x W x H) 430 x 310 x 135 mm • 2mm thick anodized aluminum plates • Adjustable "Supertwist" suspension system • 6 spiked tractor tyres • 6 Motors: 1:35 ratio, 4kg/cm stall torque • 2 - 7.2V Operating Voltage • 0.35A no load current, 5.5A stall current • Rotation speed: 295 rpm