Quality Glass Bottles: The roller ball bottles for essential oils is made of thick glass which smooth,durable and corrosion-resistant, ensuring their potency Leak Proof Design: Rollerball bottles is made of corrosion-resistant glass which makes it thick, smooth and anti-shock with leak proof design metal roller balls and colourful aluminum caps Convenience: 10 ml eye oil roller bottles are perfect for essential oils; perfume oils; and other liquids and is not wasteful. Perfect for travel and carrying Package Included: 10 pcs 10 ml colored glass Roller bottles with stainless steel roller ball, colored aluminum lids, can meet your diverse needs Use: Essential oil bottles are perfect for diluted samples or small batch blends; essential oils; perfume; lip balms; DIY liquid blends creations