Aluminum plastic caps are suitable for oral liquid bottles, original solution bottles, essential oil bottles, freeze dried bottles, etc.Specification:Caps material: Aluminum, PlasticSuitable for: 13mm Glass VialInside diameter: 13mmOuter diameter: 15mmHigh: 8mmPackage list: 100pcs 13mm CapsAdvantage:The cover is smooth and burr-free after opening, and the cotton will not get caught .Instruction :The seal can withstand high temperatures. This cover is fully tear-off, and when you tear off its plastic cover, the aluminum cover becomes unusable.NOTE: Our store has caps of different styles, sizes and colors to choose from.