Chinese Factory 20/400 Aluminum shell rubber teat Glass pipette Droppers for essential oil dropper bottle. Thickened glass bottle body, wear resistance, a variety of styles and capacity can be selected, strong light resistance.Thickened concave and convex texture Settings, so that the bottom of the bottle more anti-skid wear.Aluminum Dropper neck size:20 400mm,Material: aluminum, PP, glass, silicon, use: essential oil skin care, support customization