These test tubes with caps and racks are a must-have for any young scientist. With its plastic materials, the rest tube rack provides and reliable platform for conducting chemistry experiments, and the test tubes and caps are sturdy to use. 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 sturdy and practical to use, allowing for easy organization and storage test tubes. -These test tubes are a great way to add fun and practicality to your science-themed birthday. -Test tube racks ensure a secure and dependable base for to carry out their chemistry experiments safely. -With these test tubes with stand, experiment with different chemical reactions. -Includes test tube racks, test tubes, and stoppers, providing a comprehensive set for conducting various chemistry experiments. Package list: 12 x plastic test tubes racks 72 x plastic test tubes 72 x stoppers