Features: Fine motor activity: For children who are obsessed with tightening and loosening thing, good choice for kids~. The nuts and bolts are packaged together. Let your kid create more style by their own hands. Preschool education game: guide their natural desires, take thing apart, and then put them together as a quiet activity, so their hands are busy and easy to manipulate. Do not need to worry about putting them in your mouth. Round edges, large enough, solid primary color, thick and durable. Create educational game and activities for children with these nuts and bolts in fun and exciting way to learn! Specifications: Material: Wooden Package Size: Approx.41x6.3x30.3cm/16.14x2.48x11.93inch Package Includes: 1 Set Educational Tools note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color of the item.