LENOX LAZER Bi-Metal Reciprocating Saw Blades provide fast and easy heavy-metal cutting, with T2 technology's special tooth design to deliver longer blade life and faster cutting. Optimized for higher performance, these metal saw blades have a reinforced tooth design to help ensure higher performance in the most demanding jobs. Each saw blade cuts straighter and wider than conventional blades and are great for cutting structural steel and most other metals.