My husband is a tow truck driver & his lights in his truck went out & it was going to take them a little bit to fix it. So I bought this in the mean time! And goodness, now the owner is thinking about buying some himself for all of his trucks! Love it!Great product for the priceLooks good but glares on back windshield window. Not bright at all in the day time. But it was cheap. Easy install.it would stick to my back truck window, so i zip tied it to the metal part of the head rest. good and brightSuction cups lack holding power. Had to add a little silicone to them as well as double sided tape to brackets to get them to hold.The unit is a little too heavy or the suction cups. Suction cups are a cheap quality and everyday I find the light bar hangingI’m a lieutenant on the fire department and in addition to responding to the station I also respond to EMS calls on scene. I have dash lights for response to calls but I needed something rear facing inside the vehicle to safely mark a scene or protect my vehicle on a roadway. I saw these advertised they were very inexpensive so I figured I would give them a try and I’ve already used them a few times and have been very impressed. These also came with different mounting hardware and we’re very easy to install. I am very pleased with Ace and would highly recommend them