Bosch Edge Diamond-Impregnated Carbide-Tipped 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 and have diamond-impregnated tips, which last up to 100 times longer than standard carbide. These blades are designed with a Flat Top Grind, for fast ripping through fiber cement material. They are engineered to minimize dust, because of their specially designed deep gullets. The thin kerf design provides fast cuts, less waste and runs true.