DescriptionThese cryovial tubes made from premium material, especially designed for freezing. The screw caps would provide much convenience for the tester. For all kinds of organizations that may need to practice all kinds of tests, the tubes are indispensable.Features- Color: Transparent tube, random lid color. - Material: Plastic. - Size: 6.00X2.00X2.00cm/2.36X0.79X0.79in. - Capacity: 5ml.- These cryovial tubes are made from premium material, especially designed for freezing. - The equipped screw caps would provide much convenience for the tester. - Sturdy and safe, the test tube is well sealed to keep the stored objects free of bacteria and moisture. - These versatile transparent plastic tubes can be used in many applications. - High-quality plastic, durable and environmentally friendly. The hard shell ensures durability. Easy to clean.