Description_x000D__x000D_These test tubes with cork are made glass and wood material, small and portable, durable and can used for a long time. These glass test tubes are versatile andcan be used for mixing liquid,store liquid, powder, sample, beads and more._x000D__x000D_Features_x000D__x000D_- Color: Transparent_x000D_- Material: Glass, wood_x000D_- Size: 18.00X1.80X1.80cm/7.07X0.71X0.71in_x000D_- Glass test tubes, round bottom with wood cork, easy to fill and the lids fit tightly, no leaks._x000D_- Glass test tubes with cork are versatile tools that can be used for a wide variety of applications, such as storing and transporting small samples._x000D_- Smooth and good transparency, widely used in laboratory, research facility, craft, planting, etc._x000D_- The glass material of the test tubes allows for clear observation of the contents inside, ensuring accurate and reliable analysis._x000D_- The use of glass and wood materials, smooth inner wall, can effectively reduce liquid adsorption.Packing list15 x glass test tubes