This was among some air tools I bought at a recent auction. It uses a piece of standard hacksaw blade, and is perfect for cutting out those stuck-solid old bushings. It fits where a Sawzall blade is too big. This one happens to be Central Pneumatic (Harbor Freight), but I assume there are other brands too.
Hey Steve. I use one of those to carve our Thanksgiving Turkey every year. My wife tells me it is a little loud though. Mark