Features MAIN PURPOSE --- The DNA double helix structure model helps you easily understand biological terminology, is also a great tool for popular science education. PVC MATERIAL --- The DNA structure model is made of excellent PVC plastic, which is environment friendly and durable, and can be used with confidence. MULTIPLE COLORS --- The double helix structure model is designed with multiple colors, making learning more vivid and cultivating students imagination and creativity. EASY ASSEMBLY --- The DNA display model has a simple structure that is easy to assemble and disassemble, making it suitable for students and biology enthusiasts. APPLICABLE SCENE --- This DNA structure model is suitable for high school biology classroom teaching, DIY experimental demonstration, DNA structure display, etc. Specification: Item Type: DNA Model Material: PVC Use: As a teaching aid to demonstrate the composition of DNA. It includes 4 bases, 5 carbon sugars, and phosphoric acid, and can demonstrate the pattern structure of the DNA double helix, in which two parallel polynucleotide chains form a left and right hand helix, with phosphoric acid on the cylinder, and base pairwise pairs in the middle of the cylinder, with the base pair plane perpendicular to the cylinder. It can also be used for display or popular science education. It is assembled by various components and can be removed when used. Product Specification: Helix structure, including 16 base pairs and corresponding components. Package List:2 x DNA Model 1 x Storage Box Package List 2 x DNA Model 1 x Storage Box