Review on Backrack 30112LP 21-Inch Low Profile Toolbox Hardware Kit - Frame-Specific, No-Drill Installation by Stephen Parkell

Love the low profile brackets and how easy it is to attach the crossover to it at all times. But on my custom truck mounts, they could be more careful about where to drill the screw holes. Almost missed the rail gap under the edge to get at the stud and the rear hole was lucky it just got into the open slot in the truck rail when they tried. The bed rail end caps may have played a small part in this, but even the Amazon photos showed that they were installed over the bed end caps. But overall it worked. Do yourself a favor and get cartridges with stainless steel lock nuts. You don't have to worry about rust. For Ford F150 FX4 2013