DescriptionThis is a frozen test tube, mainly made of lightweight and durable plastic materials, safe and gentle, strong and freeze-resistant, and can serve you well. Reasonable design, excellent workmanship, reasonable structure and volume, can better help you collect liquid for sample storage. This is a very good plastic freezing tube, and it will be your good choice of sampling tube.Features-Color: Assorted color. -Material: Plastic. -Size: About 5.80X1.80X1.30cm/ 2.28X0.71X0.51inch. -Capacity: 5 ML.-Mainly made of plastic materials. Lightweight and durable, mild antifreeze. -With a test tube cover, it is safer and more convenient, and it will be your good choice. -With a reasonable structure and volume, it can better help you collect liquids for sample storage. -Transparent and gentle, smooth and durable, it can serve you well. -It is made with excellent craftsmanship and has excellent airtightness, so you can use it with confidence.