[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. [More Choice]According to different scent preferences, our car diffuser vent clip has included refill sticks that absorb and dispense any desired essential oil or perfume with longer lasting fragrance allowing you more aroma choice over your vehicle's fragrance. [New Exquisite Design]The custom car vent clip designed a newly Long cylindrical type brings you a different Visual effects. your favorite essential oil giving you a joyable mood and slowing down fatigue when you driving. Continuous fragrance,essential oil solid Aromatherapy The solid incense stick does not leak, and it is not worried about the car's sudden brake or bumps. The perfume liquid leaks out and corrodes the car decoration. It is resistant to high temperature and does not melt. It adopts nano-absorbent cotton swabs and melts without exposure to high temperatures. Soaked with plant essential oils, it is healthy and harmless, and there is no hidden danger. Easy to use: Just drop your favorite essential oil on the unscented stick and load it into the aroma diffuser, then you just clip the car diffuser on the car's vent. Tips:not include essential oil colour:black Material:metal Package Contents: 1 set x car spice sticks (4x spice sticks, 24x filter sticks (flavorless)) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.