DNA is essentially a very large molecule that contains the blueprints for life. Building this pre-painted DNA model will help you understand the basic structure of this amazing molecule! Kit includes twenty 1" Styrofoam balls, twenty 1-1/2" Styrofoam balls, ten 2-1/2" rods, ten 2" rods, ten 3" chenille stems two 45" chenille stems, 14-1/2" reinforcement wire 4x 5" display stand and complete instructions. Children should check with their Teachers to verify that the colors in this kit are acceptable. Certified Lead Free. Recommended for children ages 14 and up. WARNING: Choking Hazard-small parts. Not for children under 3 years. Made in USA.