Feature: 1. EXQUISITE AND DURABLE: This molecular model is composed of colored PP balls and connecting keys, with bright colors, sophisticated technology, easy to use, durable 2. MAIN FUNCTIONS: Molecular model kit can stimulate children interest in learning, exercise hands on ability and expand spatial imagination 3. TEACHING AIDS: The spherical molecular structure model can be used to describe the structure of various inorganic and organic substances molecules in chemistry textbooks, which can be interpreted more intuitively by teachers. Very convenient 4. SAFE AND ENVIRONMENTAL PROTECTION: The molecular model kit is made of environmental protection pp material, which is very safe and will not be broken, and has a long service life 5. APPLICABLE SCENARIO: This model set can be used to construct all kinds of common and slightly complicated C, H, O, N, chemical organic molecule structure model, applicable to teaching and laboratory 6. 3D CHEMISTRY EDUCATION MOLECULAR MODEL: Chemical structure, molecular bonds and bond angles can be displayed in all directions. Demonstrate basic molecular geometry, chemical molecular structure and stereochemistry through 3D modeling research 7. EASY TO LEARN: The common standard for each atomic color makes it easier for you to use and learn. The atoms and bonds are tightly and firmly held together and can be easily disassembled with the disconnect tool Specification: Item Type: Molecular Model Kit Material: PP Size(LxW): Approx. 23.5 x 17cm / 9.3 x 6.7in. Package List: 50 x Atom1 x Storage Box1 x Open Proportional Key Wrench16 x Extra Long Keys26 x Double Keys32 x Short Keys