Design a boat robot race car or rocket with a real working socket wrench and rugged bolts — then play with your creations! Endless construction fun for preschoolers. Develops fine motor skills. Encourages creativity. Kids use a working socket wrench to attach colorful bolts. 4 Hands-on construction projects included. Completed projects are perfect for pretend-play. No batteries required! Part of the award-winning Design & Drill line of toys.