The Ultimate Bracket from Metal Plus is an easy to use, secure and safe mounting bracket that clamps to the roof panels seam without damaging them, yet is safe and secure to use with any 2x8 or 2x10 walkboard. Work safe and secure on most metal roof panels up to a 24/12 roof slope! Features: Designed to fit both 2"x8" and 2"x10" wood plank walkboards Double-start crankshaft system allows leveling adjustment from 3:12 to 24:12 roof slopes one degree at a time High-Grade powder coating prevents corrosion Custom designed rubber pads on the base and sides of the tool prevent damage to the metal roof Easily installed on panels with a 1" to 2" vertical leg, both snap-lock and mechanical lock profiles Easy one-hand installation and removal 26lbs shipping weight Rated for a maximum load of 300lbs per Ultimate Bracket, wet or dry Follows OSHA requirements when used with proper fall-arrest systems and tie downs