Package Include 1 x tube box Characteristics -Color:As Shown tube case -Note: each case fits for placing 16 x 50ml tubes tube rack. -Size:14.50X14.50X12.60cm/5.70X5.70X4 tube box. -Material:Plastic tube freezer storage - The lid allows for easily visual inspection, nice for tube reference and identification freezer storage boxes - Wide applications. Suitable for scientific research, laboratories, school, personal use, etc test tube holder. - for freezing 50ml tube. Space-saving, and convenient to use microcentrifuge tube rack. - Crafted from plastic material, this test tube stand is sturdy and durable, support long time use vial holder. - This test tube rack is great for laboratory to freeze test tube, a necessary equipment for the laboratory 50 ml tube rack.Goods Description50 ml tube rack It saves space and gives you an easier way to store tubes.microcentrifuge tube storage Made of durable plastic material, well designed and functional.freezer storage boxes Reasonable in structure, convenient and practical, which can help you store 50ml tubes and bring you a better experience