Chang Yung offers high speed air body saw replacement blades. One packaged unit contains five pieces. The blades are available in a coarse design at 18, 21, 24 or 32 teeth per inch and are ideal for a variety of metals including auto body and exhaust work as well as fiberglass and plastic, according to the manufacturer. They fit most saws. The saw blade material is of heavy duty bi-metal construction with wavy teeth for a wide coarse cut. http://www.m-specialist.com/