SET of 6-10ml Empty Blue Frosted Roll on Glass Bottle [STAINLESS STEEL ROLLER] Refillable Roll On for Aromatherapy,Fragrance Essential Oil,Perfume Bottle and Lip Balms - Metal Chrome Roller Ball 6, Frosted Cobalt Blue Glass Roll on bottles with stainless steel roller balls & black caps. Perfect for essential oils, perfume oils, or other liquids. Safe, secure and convenient packaging. Perfect for travel, and conveniently fits in your purse. Frosted Cobalt Blue Glass Protects Against Harmful UV Rays