Cut structural shapes such as I-beams and angle iron as well as bundles of structural shapes and tubing with less tooth breakage than other blades. The teeth are reinforced, forward-angled, and widely spaced to leave room for chips to collect. These bimetal blades have a carbon steel body with high-speed steel teeth that last up to four times longer than carbon steel teeth. They're flexible for making straight and curved cuts. The teeth vary in size, number per inch, and pattern to reduce vibration and produce smooth cuts. Choose blades with more teeth per inch for a smooth finish; choose blades with fewer teeth per inch for fast, rough cutting. All have a welded seam and are ready to install on your saw.