Describe: Astronomy is a difficult study, but it is definitely important and exciting. Using this wooden hand-painted solar system, you can easily encourage your baby to explore the universe. All planets have constellations, so everyone can easily identify them. It helps to learn the solar system correctly. The plastic solar system has many small but important features, making it a great gift for children and even adults of all ages. It is a unique addition to the collection of advanced space enthusiasts and is a good start for those interested. This plastic solar system is safe for children because I only use lead-free paint and peeled basswood. Each model is handmade, so each model will be slightly different in appearance, but it is still a high-standard toy that supports learning. Detail: Material: Plastic size: 2.3cm/2.5cm/1inch, as shown in the picture The package includes: 1 set of space ball toys(9PCS)