This versatile, high end hack saw and its replacement blades are adaptable to cut a wide variety of materials including steel, copper and plastic pipe. HK 1228 is a high-tension style hack saw. Bi-metal blades have a high speed steel cutting edge and are electron-beam welded to alloy steel back, with wavy set. When used with high-tension frames, bi-metal blades provide best performance. Blades and hack saw frames are interchangeable with Stanley®, Lenox®, Starrett®, M.K. Morse® and Ridgid ®, among others.