Brown rollon bottle empty 10 ml: glass roller bottle small is brown, it is designed to protect the essential oil from UV rays. Stainless steel roller balls, seal very good, anti-leakage.Use for: essential oil, massage, aromatherapy blends, fragrance, laboratory roller bottles, DIY, perfume oils, cosmeticsTravel size: wide 19 mm x high 85 mm (0.75 x 3.35 inches). The roller ball glides very smoothly, releases the oil very well. Made of high quality glass. Refillable, washable and travelling. BPA free.Package includes: 12 rollon bottles for oils + 12 stainless steel roller balls.