Description This product is a children's DIY toy kit, made of high-quality ABS material, safe and durable, your children can use it with confidence. This DIY gear pulley toy model is mainly made using the principle of rotation. It can improve children's scientific knowledge and bring them joy. It is a very practical children's DIY toy and teaching tool. Features -Color:Colorful -Material:ABS -Size: About16.50X7.00X2.00cm/6.48X2.75X0.79inch -Made of high-quality materials, durable, safe and environmentally friendly, very suitable for children to play. -The DIY toy kit adopts common scientific principles in daily life, which can improve children's cognitive ability and help children develop interest. -It has a simple application method, which can make your children have fun in the DIY process. -It has a wide range of uses and can be used as an interesting toy for children and a practical teaching tool. -The excellent craftsmanship makes it have a smooth and comfortable touch, and it is friendly to children's skin, so you can use it with confidence. Package List1 x Kids Gear Pulley Kit