6-Well Test Tubes--Designed with 6 sockets, which is about 13.4cm/5.3 inch wide, 5.4cm/2.1 inch long, 9cm/3.5 high, each with a diameter of 1.62cm, can accommodate 6pcs 10ml test tubes, providing more capacity and convenience for experimental use. Three Layer Design--This test tube holder has a total of 3 layers to enhance the stability of the test tubes. It can protect the test tubes well and prevent them from swaying from side to side. Premium Quality--The test tube rack is made of acrylic material, not easy to break, no need to worry about corrosion, can be used for a long time. Easy to Use--This test tube rack is simple to use, and placing test tubes into the test tube holder both organizes them efficiently and improves your productivity. Wide Applications--The glass test tube holder is not only designed for professional experiments, it is also ideal for use in science classrooms and homes, gardens, etc.