The Bahco Wood & Metal Bi-Metal Reciprocating Blade has been designed for demanding cutting in wood, even with embedded nails, but it can also be used for thick metal materials. Made from virtually unbreakable Sandflex® bi-metal with precision ground teeth. Thicker blade design with a sloped, narrow nose that makes it easy to use in narrow places but still rigid. It also has a higher resistance to fracturing and bending, allowing straighter cuts.