Adoption of premium plastic material, the screws and nuts are safe for kids to play. Fun and interesting for . It is great for developing kid's hand-eye coordination, logical thinking and color cognition. The screws and nuts are brightly painted and sturdy enough to stand up for some fun interactive play. Features - Color: Assorted color - Material: Plastic - Size: About 5.5 x 4.3 x 4.3cm/2.16 x 1.69 x 1.69inch - Note: Random Color and Style of the Fixing Board. - Adoption of premium plastic material, the toys are safe for kids to play. - Selected plastic material, fall resistance, it is not easy to crack or deform. - Bright colorful design, which will stimulate kid's interest in geometry and color match. - With a smooth of each shape, it is safe for kids to play. - Fine workmanship ensures the safety and enjoyment during the playing. Package list: 16 x pairs of screw nut toys