<br>100 Pieces 20 mm vial rubber stopper with 100 pieces aluminum flip caps safe bottle stoppers for sealing 13 mm opening glass vial and liquid culture jars <br> <br>Practical tool: <br>Suitable for solid seal, glass vial, liquid culture jars and so on. There are 200 pieces vial stopper caps, which are enough to use and meet different requirements. <br> <br>Wide applications: <br>They can be applied in the kitchen, lab, etc., suitable for storing seasonings, juice, perfume, and any other liquid in your daily life. <br> <br>Specifications: <br>Color: gray, blue <br>Size: 20 mm (13 mm diameter for openings) <br> <br>Package includes: <br>100 x 20 mm Vial rubber stopper <br>100 x 20 mm Aluminum vial stopper <br> <br>Warm notice: <br>Small objects, please stay away from children under 3 years old.