it's hand formed, made from 3 pieces, 2 sides and the bottom, metal is beat out on a shot bag to the basic shape, then put through an english wheel, the frame is a huffy cranebrook but any cruiser frame will do. the 3 parts are then welded to the frame, then we cut out the filler neck from a stock kit peanut tank and weld it into the tank. grind down all the welds, do a little body work to it, then paint. it's a lot of work, i'm working on a fiberglass bolt on tank that will look the same. should have some pics of one on a bike in about a month.