Package Included: You will get 36 plastic bottles, measuring approximately 20.5 mm diameter, 59.5 mm height, inner diameter: 14.5 mm, capacity: 5 ml (0.17 fl oz). Enough quantity to meet your needs. : The 5ml centrifuge tube is made of durable plastic, resistant to high and low temperatures, and can be freeze for a long time. It has good air tightness, no leakage or evaporation, and can be used safely. Easy to use: Each graduated plastic centrifuge test tube has a screw cap, you only need to unscrew the screw cap, pour the material into the tube, and then tighten the screw cap without worrying about leakage. Storage Box: These test tubes come with a storage box that is very easy to use and store, helping you keep your experiments clean and organized. Wide range of applications: These small sample tubes can be used to hold liquids, solids, powders, seeds, pills, essential oils, perfumes, dyes, granular objects and more. Suitable for hospitals, research laboratories and other places.<br><br>Material: plastic colour: As shown<br><br>Package Contents: 36 x freezing tubes 1 x plastic box<br><br>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.