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.