Product Description Lasting up to 50% longer*, these Metal-Cutting Reciprocating Saw Blades feature a patented toothform that delivers fast, smooth cuts for a range of metal cutting applications. Their Bi-Metal construction is designed to extend blade life and minimize blade breaks. Amazon.com Use the DEWALT DW4813 saw blade for any brand of reciprocating saw. Intended for a broad range of applications including metal, plastic, wood, and drywall, these blades provide just what your job needs with the innovative, durable steel blade and patent tooth composition. Comes with five blades per package. From the Manufacturer DEWALT DW4813 6-Inch 24-TPI Straight Back Bi-Metal Reciprocating Saw Blade, Metal Trim Cuts (5-Pack)