Direct from the manufacturer: Multifunctional Electric Shaver Treasure Box Plastic parts Electric educational toy. The same tooth number, but different inner holes usually come in several different heights of products, with a variety of varieties. Welcome to call for consultation. Phone: 13825807139. Our factory mainly produces gear products: straight gears, single and double gear sets, helical gears, worm gears, crown gears, and various sizes of gear products with different moduli. Applications: widely used in various toys, such as remote control toy cars, transformable toy cars, electric toy cars, bubble guns, and various educational and educational products.