B. Toys Build-A-Ma-Jigs Roadster &ndash; 16-Piece Set &ndash; Teaches Beneficial Development Skills &ndash; Interchangeable with Other Build-A-Ma-Jig Sets &ndash; Ages 4 and Up 16-PIECE SET: This fun and open-ended 16-piece set includes wheels and a top that spin, a power drill with 3 interchangeable bits, and more. There are tons of different way you can design your racing vehicle! BENEFICIAL SKILLS: This set 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. MIX AND MATCH: All of the pieces in this play set are interchangeable with any other B. Toys Build-A-Ma-Jig sets. Innovative young minds can make masterpieces with all the sets available! QUALITY BUILT: Like all B. Toys, this play set was built using only safe and high quality materials and will last your child for years to come. SPECIFICATIONS: Package includes (1) power drill with 3 bits that requires 2 AA batteries (not included), and (1) B. Toys Build-A-Ma-Jigs Roadster with 12 detachable parts. For ages 4 and up.