Review on 360 Degree Rotating Fan-Shaped Rear Blind Spot Mirror for Vehicle Safety - Wide Angle Side Mirror Convex Rearview Mirror for Car Truck Van (Natural Mirror Color) by Brett Kolpack

These "blind spot mirrors" don't do what they're supposed to do. They're not convex, so they're flat, and you can't see other cars in your blind spot even if you turn them, because at that point you have to turn them enough that you can't see them. And it's pretty bad how these turntables and most others sit flat on the glass so they stick out and you can see the reflection of the back in a regular mirror. They're also overpriced as I found out you can get most blind spot mirrors for $2 or less at Autozone. Overall I wouldn't buy it again as everything I found positive turned out to be negative.