These round, convex mirrors measure 3-inches in diameter and feature corrosion resistant, outer rings to help protect the mirrors and give them a nice, finished look. These simple convex mirrors stick to any flat, clean and dry surface with weather resistant adhesive backing. These blind spot mirrors are the perfect size for the larger side view mirrors found on vans, pickups and SUV models. Simply peel and stick the blind spot mirror into place and you’re done! Give your vehicle the added safety and convenience found in blind spot mirrors! Whether you tow and haul or not, a blind spot mirror added to your side view mirror can prevent fender benders and other collisions and help you become a safer driver. If you want to give yourself a little peace of mind when you check your side mirrors, then you will appreciate the safety added with this blind spot mirror.