These rock sliders are made with 1.75" 120wall DOM tubing. 
They are mounted on 4 legs and come with frame plates that are 3/16 steel plate with gussets. They are a weld on style or bolt on, we suggest welding them to the frame though. 
They are 92" long, there's enough room between fender wells and rock sliders if you ever decide you want to trim the body for oversized tires.