Features: 1.EASY TO ASSEMBLE AND DISASSEMBLE: DNA models are made of plastic. Easy to assemble and disassemble, they can be used as a science starter for students to explore the molecular world. 2.RESTORE REAL MOLECULAR STRUCTURE: DNA double helix modesl kit restores the real molecular structure and is excellent for both home study and academic teaching demonstration use. 3.DOUBLE HELIX SHAPE: Interlocking segments connect to form a double helix shape, hands on interactive science kit that makes learning come alive. 4.WIDE RANGE OF USES: DNA double helix model is versatile and suitable for use as a teaching tool, learning display and collectible in schools, or as a great addition to the laboratory. 5.EDUCATIONAL TOYS: Double helix structure models are great educational toys that train your observation, thinking and analyzing skills and help approach science. specification:Item Type: DNA Double Helix Modesl Kit Material: Plastic Purpose: DNA Double Helix Structure Model Is a Scientific Enlightenment Tool for Students to Explore the Molecular World and Stimulate Their Interest. It Can Train Children's Practical Ability and Cultivate Their Observation, Thinking and Analysis Ability PackageList: 32 x Deoxyribose Model 32 x Phosphoric Acid Model 8 x Adenine (Thymine) Model 8 x Guanine (Cytosine) Model 1 x Storage Box