- Color: Transparent - Material: Glass. - Size: About 5. 00* 2. 20* 2. 20cm/ 1. 97* 0. 86* 0. 86inch. - They are made of materials and are practical and durable. The vials are made of borosilicate and are characterized high and low temperature resistance. - Design, easy to use and transport. They are pocket sized and fit anywhere. Clear glass bottles do not fade. They can be refrigerated, heated and boiled. - Sample bottles allow you to store essential oils, mixtures or samples to meet your daily needs. 20 10ml glass vials, 20 aluminum caps, 20 rubber plugs. - Smooth neck, easy to fluid, hand injury. Easy to install. Silicone cover is not easy to leak. Easy to move liquids. - The bottom is flat and thickened, with good sealing effect and high pressure resistance. The wall thickness of the vials is 1mm. Temperature range: - 200°C to 200°C (- 328℉ to 392℉ ). - They are made of materials and are practical and durable. The vials are made of borosilicate and are characterized high and low temperature resistance. - Design, easy to use and transport. They are pocket sized and fit anywhere. Clear glass bottles do not fade. They can be refrigerated, heated and boiled. - Sample bottles allow you to store essential oils, mixtures or other samples to meet your daily needs. 20 10ml glass vials, 20 plastic aluminum caps, 20 rubber plugs. - Smooth neck, easy to fluid, no hand injury. Easy to install. Silicone cover is not easy to leak. Easy to move liquids. - The bottom is flat and thickened, with good sealing effect and high pressure resistance. The wall thickness of the vials is 1mm. Temperature range: - 200°C to 200°C (- 328℉ to 392℉ ).