B Roadster Build-A-Ma-Jigs: Children start your imaginations. there are no rules on the road Take the Roadster apart then put it together again & again as many times as you like. Toy power drill with forward & reverse motion is included with 3 interchangeable bits to help you build & it's complete with batteries. The 16 pieces are interchangeable with other Build-a-ma-jigs sets too. Look out for the B Build-a-ma-jigs Submarine, Dump Truck & Aeroplane (sold separately).