Our 18-tooth essential oil bottle accessories set is designed for convenience and ease of use. With these roller balls and dust caps included, you can easily create and store your favorite essential oil blends. The roller balls provide a smooth application, while the dust caps ensure your oils remain clean and pure. ideal for on-the-go use, these accessories are essential for any essential oil lover. Features -Color:Black -Material:Stainless Steel,pp -Size:2.90X2.10X2.10cm/1.14X0.83X0.83in -Size:2.20X1.20X1.20cm/0.86X0.47X0.47in -Userfriendly design: the 18tooth essential oil bottle accessories with roller ball and dust cap are simple to use, making essential oil application ideal -Leakresistant: the dust cap effectively prevents essential oil leakage, ensuring that the bottle remains clean and dry at all times -Smooth application: the roller ball design provides a smooth and even application of essential oils, maximizing their benefits -Multiple uses: these accessories are suitable for a variety of essential oil bottles and can be used in different settings such as home, office, and travel -sturdy and durable: made from sturdy materials, these accessories are durable and reliable, ensuring longterm use without frequent replacements Package list: 20pcs (10 roller balls + 10 black caps) essential oil bottle accessories