What You Will Get: You will get 5 centrifuge tube racks, one each in yellow, green, purple, blue and orange. The size of this tube holder is 122.5x85.5x29.5mm/4.8x3.4x1.16inch, and each holder has 96 wells, which is enough to meet your daily needs. High Quality Material: The tube holder has made of plastic material, which is heat-resistant, corrosion-resistant, drop-proof and can be used for a long time, with a transparent cover for easy access. How to Use: It is simple and easy to use, directly put the test tubes you need to store into the test tube rack. Wide Applications: It is suitable for centrifuge tubes, vials, perfect for science experiments and other projects it is a good helper for you to do experiments! Practical Tool: The tube rack holder can better prevent the test tubes from swinging from side to side, and hold the test tubes firmly to avoid damage to the test tubes.