Simple installation steps, easy and simple to assemble and disassemble. This molecular model biology concept, and it is designed for all ages, students, teachers, parents and more. It plays a very important role in child development. Features -Color:Multi -Material:Plastic - Size: 40.00X5.70X2.00cm/15.72X2.24X0.79in - Self-assembling suite can exercise child's concentration and mental concentration, delivers more fun opportunity. - Bring a real and objective experience for children to learn more about human genome. - An intuitive teaching aid suitable for teaching basic DNA double helix and biology courses in middle schools. - Make learning come alive and build creativity with this hands-on and interactive science model. - Enhances scientific knowledge by providing a comprehensive and interactive learning experience on the structure of dna. Package list: 10 x sets of Double Helix DNA Model