Premium Material---The molecular model has good durability, is safe and non-toxic, wear-resistant, corrosion-resistant, and not easily damaged. The product is long-lasting with high gloss and texture. Product Feature---This chemistry model helps chemistry learners understand 3-dimensional molecular and atomic structures in the invisible world. It is a useful tool for children and students interested in learning chemistry. Precise Chemistry Model---This sophisticated model includes a complete set for conducting experiments. For teachers or parents, it makes teaching complex molecular structures easier than using only pictures in books. Powerful Function---This model includes connectors for C, H, O, N, Br, and other atoms, along with single and double bonds, long bonds, and bond connectors. It can be used to build most organic and inorganic molecular structure models for high school and university chemistry studies. Orbital Model Kits---The product includes extra orbital components for advanced chemistry education. The model enhances practical understanding of molecular bonding and is a valuable resource for students and children. Material: ABS Color: As Shown Package Contents: 86 x Model Pieces 153 x Connectors 1 x Linking Tool 1 x Plastic Storage Box Only the above package content is included; other items are not part of the sale. Note: Light and display differences may cause slight variations in color between the image and the actual item. Measurement error is +/- 1-3 cm.