Easy to Use: The car air vent clips are very easy to install and use without the need for other tools. Step 1 Push the clip into the back of the flower. Step 2 Place the refill pads into the groove on the back of the flower. Step 3 Install the clip on your car air outlet. Beautiful car air outlet decoration and able to maintain fresh air. Packaging Includes: 6 PCS Car air fresheners vent clips. These beautiful colorful flower shape car perfume clips can not only freshen the air, but also decorate the car interior. You can give them as gifts to friends and families who love cars.