Hey! they stole my design!....lol no I saw a set on a friends jeep so I copied them, changed the underside to fit my application, went with a thicker, stronger material (P-20 steel), had it bent, then I carbonized and harden to a 45-50 Rc. But there nearly the same, I already had slider steps on my jeep so this stiffened the body next to the door and protected the underside from rocks slipping through the sliders kissing the sheet metal.