The Power Stunt Arm allows kids to do stunts they've only dreamed of before. The Rollcage vehicle's abilities start with cool spins and wheelies. Then, with the push of a button, the Power Stunt Arm pops out. Pop into a flip straight off of a ramp, roll down rocky terrain and steep hills, and even barrel through obstacles. When kids want the rolling to stop, they can bring the Power Stunt Arm back in, and Rollcage will keep on driving. Requires one TMH FlexPak rechargeable battery pack for the vehicle, plus one "9V" battery for the transmitter (not included).