EORRZZY 2 Packs Custom Car Air Freshener Diffuser Vent Clips for Car Decoration Accessories with 12 Refill Sticks for Car, Office, Kitchen, Bathroom, Pet HousesPlease Note: This product does NOT CONTAIN ANY ESSENTIAL OILS, the cotton swabs that come with it are unscented cotton swabs, and buyers need to bring their own essential oils to use with it. [Unique Rotating Design] The top and bottom of our car clips have different sizes of diffuser hole, you can rotate the white dot marked end to control the concentration of aromatherapy. When you want a faint scent, you can turn off the diffusion port of car air