This product is a and practical toy wheel, made of plastic materials, safe and environmentally friendly, with texture, suitable for children's smart car toys or vehicle models. The wheels with good workmanship have , durability, wear resistance, and good elasticity. Features - Color: Black - Material: Plastic - Size: About 4.20 x 4.20 x 1.00 cm / 1.65 x 1.65 x 0.39 inch - The toy wheels are made of plastic materials, which are safe and environmentally friendly, with texture. - The wheels with good workmanship have , durability, wear resistance, and good elasticity. - toy wheels can be applied to children's smart car toys and vehicle models, etc., and have a wide range of uses. - This product is easy to disassemble and will not cause trouble to your children when using it. - The main material of the wheel is plastic, which is safe and environmentally friendly, so your child can use it with confidence. Packing list: 40 x wheels