Customize robots by mixing and matching pieces! Children can mix and match to create hundreds of combinations. Pick your pieces, then use the child-friendly tools to assemble the robot, then take it apart and do it all over again! Includes child-friendly drill, Phillips bit, screwdriver, gear socket bit, 32 bolts, 26 interchangeable pieces, seven gears, and sticker sheet. Requires 2 AA batteries (not included). 70 pieces. Ages 3 and up.