Welcome to our shop! 1. Crafted from natural wood, non-toxic and reliable. 2. Cultivates children's observation skills and encourages them to develop their imagination. 3. This DIY process trains your child's hand-eye coordination for more flexible minds. 4. A great toy to spark children's interest in scientific physics experiments. 5. The perfect early educational toy for your little one. Also an ideal gift to strengthen your bond with your children. **Features:** * Made from natural wood, non-toxic and reliable. * Cultivates children's observation skills and encourages them to develop their imagination. * This DIY process trains your child's hand-eye coordination for more flexible minds. * A great toy to spark children's interest in scientific physics experiments. * The perfect early educational toy for your little one. Also an ideal gift to strengthen your bond with your children. **Specification:** Material: Wood Size for main stock: about 7*4.5*10cm / 2.76*1.77*3.94in Size for passenger compartment: about 6*5*7.5cm / 2.36*1.97*2.95in Color: As shown in pictures Power supply: 2*AAA (not included) Package weight: about 151g **Package list:** 1* User Manual 1* Main stock 2* Passenger compartment **Note:** Please allow a slight error due to manual measurement and make sure you don't mind before ordering. Please note that colors may vary depending on the placement of the image. Your satisfaction is our top priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will give you the best solution!