Mine is a 1 foot tall chunk of 20ish inch culvert with a forged ford I beam cast into it, offset, with concrete. I welded a piece of 12 inch long C channel to that and welded corresponding nuts to fit the vise. I can stand on the concrete base to offset any movement when torquing on it. The offset gives me leverage to roll it around. I know... Pics. It weighs a lot.