Features MAIN PURPOSE --- Chemistry molecular model kit, used to build CO2 crystal structure model in the form of elemental substances in textbooks. ATOM SPECIFICATION --- Including 28 sky blue oxygen atoms and 14 black carbon atoms, with standard holes and sizes, making it easier to use and learn. BOND SPECIFICATION --- Includes 3 specifications of single bond metal rods for connecting oxygen atoms and carbon atoms, easy to install and remove. PLASTIC MATERIAL --- These atom models are made of excellent plastic, with good durability and texture, high gloss, bending resistance, and long service life. APPLICABLE SCENES --- The crystal structure model kit can be used as a popular science aid, chemistry classroom teaching, to stimulate research and learning interest. Specification: Item Type: Chemistry Molecular Model Kit Material: Plastic Oxygen Atom Specification: 1 Hole, Color: Sky Blue, Quantity: 28PCS Carbon Atom Specification: 6 Holes, Color: Black, Quantity: 14PCS Single Bond Specifications: 8PCS 130mm Metal Rods, 24PCS 90mm Metal Rods, 28PCS 25mm Metal Rods Product Use: This model is mainly used to build a crystal structure model of CO2 in the form of elemental substances in textbooks Package List:1 x Chemistry Molecular Model Kit Package List 1 x Chemistry Molecular Model Kit