For a friends project, after probably what will be an old blade-Track Marshall/smaller dozer type. Ideally 10 feet wide with a true replaceable edge. But a true bulldozer application construction & build. Have seen the rubber duck types for sale & know where I can get a couple of 12-13ft blades, but they are way too big for our needs. There will be some of these in nettles somewhere I am sure! Any thoughts, please message me.