Review on SS VISION 20 LED Trailer Tail Lights Bar - Waterproof, DC12V 5 Wires Red-Amber-White Turn Signal and Reverse Lights for Truck (2 Pack): Rugged and Reliable Trailer Lighting Solution by Erik Barela

Beautiful and bright, easy to install. Pair of holes 7/32" for mounting screws and 1/2" for wires; lasted about 5 minutes. But. I made sure the mounting surfaces on my bumper were FLAT, didn't tighten the screws from the factory voltage on the lenses, used a Phillips head screwdriver to hold the screw in place, and tightened the nuts with a 1/4-in -Ratchet on. Washers and nylocks so I didn't have to over-tighten them - and both lenses were still breaking around the bolt hole when I tightened the second nut. In fact, upon closer inspection, one of the nuts was still not touching: the lens just by pushing it broken on a screwdriver. However the screws are long enough and will break in this position to simply fit a washer under the screw heads and clamp the lens in place as shown in the picture. I can still use flashlights in this case and only deduct one star. I highly recommend adding a simple pad of compressible material - rubber, cork, even paper - between the flashlight body and the mounting surface, ok.