DescriptionSafe, practical and premium, all the advantages of car toy parts and accessories you want can be reflected in this miniature engine kit. The materials of the product is plastic, which is safe and light to hold, and your children can use it with confidence.Features-Color: Assorted color-Material: Plastic -Size: 5.60X3.00X1.20cm/ 2.20X1.18X0.47 in.-Note: Please read the instructions or pictures carefully, use the correct circuit diagram to avoid short circuit, short circuit will generate high temperature and cause damage to the accessories!- With good workmanship and good durability, wear resistance and good elasticity.- Simple-looking and practical, can be well matched with various children's car toys, attractive for kids to play with, especially for boys.- Easy to disassemble, safe and will not cause trouble to your children when using it.- Allow you to make science and projects more interesting and more options to fit your experiments.- Made of premium materials, durable and solid, has a long service life, and will not be easily damaged.