Features: Fine motor activity: For children who are in love with tightening and loosening thing, great for kids. The Nut and bolts are packaged together. Let your kid create more style by their own hands. Preschool educational game: guide their natural desires, take thing apart, then put them together as a quiet activity, so their hands are busy and easy to manipulate. Round edges, large enough, solid primary color, thick. Create educational game and activity for children with these Nut and bolts in fun and exciting way to learn! Specifications: Component: Plastic Size: Approx.27x20x17.5CM/10.63x7.87x6.89inch Package Includes: 1 Set Educational Tools(57pcs) note: 1.Please allow 1-2cm errors due to manual measurement, note that you donot mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. 3.Package includes 2pcs drills: 1 pc electric drill & 1 pc manual drill.