When and if you ever have to change out your rear view mirror in your vehicle, do so very carefully. By pressing to attach the adhesive on the back of the mirror, you can break your windshield. A fellow my husband works with passed on this bit of info. So for this, it's better to allow a certified garage service worker to change it out. If they break your windshield, they have to replace it. If you do it, yourself, it's all out of pocket, for you!