From the front end protection for your FJ to the sides. Our bumpers start at the frame with .250 " (1/4) plater formed steel from there we build our bumpers with 1.750" and 1.50" DOM tube. We will not us ERW tubing. Here is a comparison (YouTube video) of the tubes in a simple test. The same with our FJ Sliders. NO ERW IS USED. We want our customers to be safe on and off road. Do you want to build your own bumper? Then start from this assembled kit.