Our ladders are CNC cut and formed from 1/4" Aluminum with 1"x1" rungs TIG welded in. No drilling or permanent modifications required for installation Ladder comes complete. no assembly required weighs 9lbs - works with factory hatch struts Formed to follow the angle of the rear window 1/4” Thick sides do not impede rear window or camera visibility Powdercoated in a durable textured black finish Built from aluminum so you never have to worry about rust Comes with all stainless steel hardware for mounting Comfortable and usable rung spacing with over sized bottom step Square rungs for added surface area and grip Compatible with our full roof rack, as well as all stock options 180lb Static Load Limit, and a 20lb Dynamic Load Limit Optional backing plate for mounting a RotoPax mounting bracket to a ladder rung (RotoPax mount not included)