Bosch Edge Ferrous Metal-Cutting Saw Blades start sharp, stay sharp and resist impact damage for long life. They are designed for tough jobs, because they are engineered with Brute Carbide, an extra-hard C6 micrograin carbide formulation that increases impact resistance. They have Triple Chip Grind (TCG) Tooth Geometry designed for delivering maximum performance and high quality of finishing in highly abrasive materials. Designed with slightly negative hook angles, they produce clean cuts with minimal burrs. They are designed for mild steel plate, angle iron, bar stock or pipe. To avoid warping, these blades have been built with expansion slots. These blades also feature body slots for cooler running, less dust debris than bonded abrasive wheels.