Materials, tooth configuration and heat treating are designed to maximize performance in specific cutting applications. Durable, long life blades. Blade has a 1/2 inch universal tang that fits all Sawzalls and standard competitive saws. Applications: Cuts Hardwood Flooring, Cast Iron, Stainless Steel, Fiberglass Materials, (Polyesters,Epoxies, Melamines), Ceramic Tile, Stone, Slate, Clay Pipe, Carbon, Brick, Plaster, Marble, & Chalkboard.