Package Contents: 2 x 15mm Car Aroma Diffusers + 30pcs (Cotton Core). High Quality: Our car diffuser lockets are made of high quality stainless steel that won't tarnish or fade. High polishing process, smooth surface. Safe and Happy Driving: A car diffuser is a great way to experience essential oils while driving. Help relieve stress, anxiety or headaches with your favorite essential oils. You will be able to enjoy the scent of diffused essential oils. Easily change scent: there are padding pads in different colors, the pads can be washed and reused without leaving residue. When you want to change the scent, you can easily change the pad without having to change the car vent diffuser, which is a big plus. Instructions: Put a few drops of essential oil/perfume spray on the pad and place it in the small diffuser box. Simply place it over the vent and let the fragrance flow gently through the small vent on the back. Packing List: 30 essential oil diffusers. We only sell essential oil diffusers, not other items in the pictures. Due to factors such as manual measurement and display differences, there may there may be slight differences between individual products and images.