This fun and open-ended 16-piece set includes wheels and a top that spins, a power drill with 3 interchangeable bits, and more. There are tons of different way you can design your racing vehicle! It teaches a multitude of skills that encourage healthy and beneficial development in young children, including problem solving, hand-eye coordination, creativity and original thinking, complex reasoning, planning, geometrical awareness, STEM learning, and more. 2 AA batteries are required and included. All of the pieces in this play set are interchangeable with any other B. Toys Build-A-Ma-Jig sets.