Premium Material---The molecular model set has good durability, is safe and non-toxic, wear-resistant, corrosion-resistant, and not easy to damage. The product can last for many years. Never worry about broken problems, high gloss and good texture. Product Function---This organic chemistry model can help chemistry students understand the 3-dimensional molecule and the molecule in the micro world. It is an important tool to stimulate children's or students' interest when learning chemistry. Accurate Chemistry Model---This sophisticated model contains a complete set for you to perform the experiment. For teachers or parents, you can teach your students or children about the complex molecular structure much easier than just pictures in books. Powerful Function---This model contains C, H, O, N, Br and other metals and a variety of single and double bonds, long bonds, long keys. Can be placed high school chemistry, university chemistry in most organic or inorganic molecular structure models for the study of experimental operation. Electron Orbital Model Kit---Our product includes an extra electron orbital model for advanced chemistry education. In addition, the model can improve the practical ability to link the molecule. Therefore, it is an important part for students and children. Material: ABS color: As shown Package Contents: 86 x Atom model 153 x Link 1 x Link tool 1 x Plastic box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.