I spray a very thin coat of fluid film on the aluminum brackets and U-bolts without any problem of corrosion. Been using this bracket system on other tractors and equipment for several years. Never any problems. The u-bolts are stainless. Yes, a bit more expensive for material costs, but premium appearance. The bracket edges are chamfered so no sharp edges to dig into powder-coat on roll bar. I keep my equipment very clean, so maintenance is always priority. The install is very simple for a variety of lights, which was my goal, and I can easily CNC the brackets in my model shop.