Selling to declutter. The part where I wrote my name on the cover has been cut out. Everything is included. I've only used it about twice in class. 【Product Overview】 This Molecular Structure Model C-type set is the perfect educational material for organic chemistry practicals. It includes a variety of atom model parts and bonding components, helping to visually understand the structure of molecules. 【Contents Details】 The set includes atom model parts of various colors (black, white, green, red, blue, etc.) and bonding components, allowing you to freely combine them to build molecules. This allows students and researchers to practically learn the concepts of organic chemistry. 【Usage Purpose】 This set is suitable for use in educational institutions and research institutions, and is an ideal tool for deepening the understanding of molecular structures and chemical bonds. - Brand: MARUZEN - Product Name: Molecular Structure Model C-type set - Contents: Atom model parts, bonding components - Usage: For organic chemistry practicals