Are you still worried that there is no container for your to do chemistry experiments? Do you want to have a tube for storing samples? , our test tube and rack set is carefully prepared for you. Large quantity meet different experiment needs. Features - ColorAssorted Color - Material: Glass, wood, rubber. - Size: 36.00X9.00X7.00cm/14.15X3.54X2.75inch. - The set content contains 10 glass test tubes with rubber stoppers, 1 10-hole wood test tube rack and 1 cleaning brush. - Made of with excellent transparency and heat resistance, which is , thicker and more durable. - High transparency, allowing you to observe the inside status. Comes with stoppers so the seal is not a problem. - Wooden test tube stand, durable and environmental friendly. Glass test tubes for a variety of uses. - Great for laboratories, craft projects, schools, and more. It can be used as accompaniment for children to research freedom, or for storing samples. Package list: 30 tubes with rubber stoppers 3 tube rack 3 x cleaning brush