You will receive 8 pieces 4 way test tube holders in 4 different colors, including blue, orange, green and yellow, 2 pieces for each color; They are enough to store multiple test tubes at the same time without working about lack of space. This test tube containers have different sizes in different sides, the first side can store 4 test tubes and is suitable for 50 ml test tube, the second side can store 12 test tubes and is suitable for 15 ml test tube, the third side can store 32 test tubes and is suitable for 1.5/2.0 ml test tube, and the fourth side can store 32 test tubes and is suitable for 0.5 test tube. Made of High-quality material, the lab tube organizer is sturdy and not easy to break or deform, and designed with a special card slot that can be applied for multiple combinations and connection installation for creating a larger rack holder, providing you with a long term use. The lab test tube holder has a smooth without burrs and pointed parties, non and odorless, reusable, cleanable and can be autoclaved, can stand on the table firmly and is safe to store test tubes, so that you can use them with confidence. Our 4 way tube organizer can be applied at chemistry laboratory, science classes, research classes, laboratory organization and other places need to store test tubes, ensuring the tubes are organized and easier for operation. Our multi size test tube holder has different colors that allow you to store test tubes according to the contents of the tube, making the tubes more organized and easier to find if needed. Our laboratory tube holder has enough room and can store multiple test tubes, so that you can properly store the test tube in different holes to keep a certain distance, which can effectively avoid the reaction of the things in the test tube to affect the experiment results. Colour:As Shown Material:Plastic Package Contents: 1set * test tube rack(8 Pcs) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.