Young engineers can use the included instructions to learn how to transform these colorful collections of nuts, bolts, springs, and hardware pieces into a robot model. Or, forget the instructions and design a unique creation from your imagination. Includes the 5-in-1 SuperTool that works with all OffBits parts. Strengthens fine motor skills, hand-eye coordination, spatial awareness, and more. Includes instructions. Metal and plastic parts. Box is 4 1/2"L x 1 1/2"W x 6"H. Ages 6+.