Information. It lets you make educated, rational decisions, in the blink of an eye. Like making a sudden lane change away from an irrational driver when there is no time to think. How? Because you already know the lane is clear. This snap-over replacement mirror gives you a sharper, clearer, and a wider field of vision for those decisions. Great for any classic car with a tiny rear view mirror or enhancing your daily driver to eliminate blind spots. Great for SUV's and trucks, too. The special coated glass reduces glare and blurred vision during night driving. Easy, 5-second installation. Just slide the spring-loaded brackets onto your existing mirror and you're done. No drilling or damage to your original mirror. 13" across and 2 3/4" tall. Shatterproof glass. Pick up an extra mirror for the daily driver to stay one step ahead of the kids in the backseat.