MULTIPURPOSE - Our test tubes are great for science labs, chemistry classrooms, and home decoration, etc., suitable for teachers, researchers, and more.
WHAT YOU GET - The package comes with 10pcs test tubes and 10pcs cork stoppers; Color: Clear; Type of Bottom: Round; Inner Diameter: 18mm / 0.71 inch; Tube Diameter: 20mm / 0.79 inch; Tube Length: 153mm / 6.02 inch.
RELIABLE MATERIAL - The test tube is made of polystyrene (PS), round bottom, resistant to acid, corrosion and high temperature. The cork stopper is a wooden material, and it has good seal.
SPECIAL DESIGNED - Test tubes can be used to store laboratory liquids, powders.
KINDLY NOTE - Please read the measurements before ordering if you are concerned about the size.