With Rose God screw lid which fits tightly and can effectively prevent any liquid leakage. Rollers are made of Stainless steel, which is corrosion resistant. The tightness can prevent any sort of leakage,with our bottle opener,can easily be disassembled and filled. These roller ball bottles can be used to storing essential oil blends,aromatherapy,essence,perfume oil,Cosmetics,liquids,mixes and so on. Capacity:5ml,bottle size:approx 19mm×62mm,perfect for travel,and conveniently fits in your purse,pocket,bag etc. Made of high quality thich corrosion-resistant glass material,which is not easy to leaking,scratches,or breaking.