Review on 💪 3-inch Round Ultra Strong Power Magnet Base for LED Offroad Light/Work Light/Light Bar Mount on Steel Surface of Trucks & SUV - Universal Fit, Includes Rubber Pad to Prevent Scratches - 1 Pack by Michael Onwukaife

They're not the cheapest on Amazon, but they're very durable. I was concerned to see another reviewer say their lightbar dropped off at freeway speeds, so I attached a safety tether for the first month just in case. After off-road rides on rough back roads and a couple of times on the freeway at 75 mph and headwinds in excess of 40 mph, this thing didn't budge. I suspect other people's problem was user error. You may need to bend or tweak the mount a bit to ensure the magnets are snug against the steel. Then they are hard as stone. I use a 52 inch curved lightbar on the top of my truck. I love that I didn't have to drill holes in the roof and that it's far enough back that I don't have to deal with wind noise or light bouncing off my hood (like it's mounted over the windshield). . Excellent mounts. Don't worry, they're pretty strong if you use them properly.