Keep yourself and others safe with these wide-angle blindspot-reducing adhesive mirrors from Iconikal! These convex stick-on mirrors provide a widened point of view for your side mirrors and help eliminate dangerous blindspots. Spot cars, trucks, semi-trailers, and more much easier and quicker for a safer driving experience. INSTALLATION INSTRUCTIONS: Prep mirror by cleaning thoroughly to remove any dirt, soot or film using rubbing alcohol, mineral spirits, or similar cleaners; dry completely; stick on mirror in desired location. Each blindspot mirror measures 2 inches in diameter (2" Dia.); includes (6) stick-on mirrors. Check with your auto insurance company to see if applying a blindspot mirror will reduce your premium!