Though these cylindrical tubes with three holes lid design are simple in design, they are so practical when you use it. Lightweight and portable, these cylindrical tubes are very convenient for you to use. The excellent workmanship of this cylindrical tube will bring you a good experience. Features - Color: Transparent. - Material: Plastic. - Size: About 7.70X2.10X2.10cm/3.03X0.83X0.83inch. - Made of great quality material, it is and safe for use. - The product is in a simple design, but it is very useful and practical. - The perfect workmanship of these cylindrical tubes will give you an excellent use experience. - These cylindrical tubes are lightweight, you can sue them easily and conveniently. - Sturdy and safe, when do some experiments and this avoids the whole broken glass issue. Package list: test tube bottles