Blind spot? What blind spot? Simply attach this Blind Spot Elimination Mirror to almost any mirror housing and you'll enjoy seeing practically into the next state! No kidding! You can see four lanes of traffic with just a quick eye movement, instead of craning your neck around and taking your eyes off from what's in front of you. Makes emergency lane changes quicker too! Installs in minutes and can be taken off easily without damage to your factory mirror housing. You won't believe what a difference this mirror makes, and scaring the heck out of someone if you move over by accident will be a thing of the past. If you tow anything, I can't see how you could live without it! 4 1/2" wide, 2 1/4" tall.