[High quality] Made of high-quality glass, transparent, not easy to break, each vial has a PP plastic cap and foil liner [Good sealing] The foil liner contained in the bottle cap is inert and clean, forming a very airtight seal, suitable for sealing and preserving the product [Size] 27mm x 60mm with cap on, capacity: 20ml, including 20pcs glass bottles, to meet various needs [Easy to carry] Portable size, easy to carry everywhere, high tightness ensures no need to worry about leakage [Applicable] Apply to store volatile organic solution such as acetone, fumes, alcohol and acid type solution