50 x 20 ml Glass Bottles with Screw Cap and Plastic Stopper

Leak-proof: Each bottle is equipped with a plastic plug and a seal in the aluminium cap, excellent sealing performance to prevent leakage. You can put it anywhere without worrying about leakage, and it is easy to store and transport. 
High-quality material: the small glass bottles are made of borosilicate glass, which can withstand temperatures from -200 to 200 degrees. They can be cooled, heated and boiled. Durable and can be used repeatedly. 
【Size】Capacity: 20ml; Diameter: 22mm (0.87"); Height: 80mm (3.15"); Inner Diameter: 14mm (0.55"). 
Wide applications: the leak-proof glass bottles are ideal for storing liquids, powders, seeds, samples and small items, etc. As no air enters the bottle, you don't have to worry about deterioration. 
Box contents: 50 x 20 ml glass bottles, 50 x aluminium screw caps, 50 x plastic plugs, 64 x adhesive labels, protected with bubble wrap and thick cardboard, safely packaged.