The science kit set includes sturdy test tube racks, test tubes and caps, adequate supply to meet your needs. With these stands, allowing for easy organization and storage of the test tubes. They make an excitement to the learning process. Features -Color:Assorted Color -Material:Plastic -Size:16.00X5.60X3.70cm/6.29X2.20X1.45in -Size:11.00X1.20X1.20cm/4.32X0.47X0.47in -Test tube racks are designed to provide a convenient and organized storage stand to use. -Test tubes with stand are suitable for science-themed birthday, summer pool party, or other party supplies. -Test tube racks and stoppers have vibrant colors to add an element of excitement and fun to the learning process. -Test tube stand provides and reliable platform for conducting chemistry experiments. -Test tube and stand set promotes active learning and encourages to explore, encourages hands-on learning. Package list: 15 x plastic test tubes racks 90 x plastic test tubes 90 x stoppers