Magnetic combination - Innovative magnetic combination design, where the diffuser lock and clamp are connected through magnetic connection. When changing perfume, just remove the diffuser lock. Avoid frequent unloading and re tightening to damage the vent.[Simple Installation] - Place a pad in the diffuser lock, apply 2-3 drops of oil to the pad, close and clamp the air outlet. There is no need to roll it out. The package does not contain perfume or essential oils. Unique ventilation design - Special carved patterns on the front and small vents on the back allow air to flow through the vents, and then through diffusers, help distribute the fragrance. Multipurpose - Drop a few drops of your favorite essential oil onto the pad, and place the essential oil diffuser in the car, room, office, or any other suitable place to create an enticing aroma and eliminate any unwanted odors.[High quality] - Made of 316L stainless steel with magnetic seal, easy to use.