Keep your essential oil roller bottles in top condition with these 16-tooth transparent roller balls. Made from PE plastic, they are designed to fit snugly into the neck of your bottles, providing a smooth and even application of your oils. Suit for lip oil and perfume bottles, these roller balls are an essential accessory for any oil enthusiast. Features -Color:Transparent -Material:Steel, Plastic -Size:2.10X1.00X1.00cm/0.83X0.39X0.39in -Compact and portable: designed to and lightweight, these roller ball bottles are easy to carry, making them ideal for use -Multifunctional: suitable for essential oils, lip oils, perfumes, and other liquids, these bottles offer a versatile storage solution -Smooth application: the 16tooth transparent roller ball ensures a smooth and even application, providing a comfortable user experience -Durable and safe: made from pe plastic, these bottles are transparent, and safe for various liquids, ensuring longterm use -Wide range of uses: Suit for home, travel, and office settings, these roller ball bottles are designed to meet a variety of needs Package list: 30 x roller bottles