Lasting up to 50% longer, these Metal-Cutting Reciprocating Saw Blades feature a patented tooth form 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. Our accessories have all been developed for you, to meet and exceed your needs. We spend thousands of hours on the jobsite every year, testing and re-testing our accessories with the people who know best you. So when you buy a DEWALT accessory, you can be confident that we have put as much thought into it as you would. We mean long life. We mean efficient performance. We mean innovative solutions to solve your frustrations.