10-pack Plastic Test Tubes With Screw Caps, 50ml/15ml/10ml, Round Bottom,. Introducing Our Versatile Centrifuge Tubes, Perfect for Both Scientific and Office Applications. Made from Durable, Transparent Plastic, These Round-bottom Tubes Come with a Secure Screw Cap to Ensure the Integrity of Your Samples. Available in Sizes of 50ML, 15ML, and 10ML, They Are Sold in Convenient Packs of 10, Making Them Ideal for a Variety of Experimental and Organizational Needs. Features: - Material: Durable Plastic - Capacity: 50ML, 15ML, 10ML - Color: Transparent - Design: Round Bottom with Screw Cap - Packaging: 10 Pieces Per Set - Applications: Suitable for Scientific Experiments and Office Use. Your order tracking code will be sent on shipping and takes up to 5 days to show live information.