The 9-inch 10 TPI Reciprocating Blades 25-pack from BLACK & DECKER is designed for heavy-duty cutting tasks. With a 10 teeth per inch (TPI) configuration, these blades are perfect for demolition and construction applications, providing efficient cutting through wood and metal. Made from high-quality steel, they ensure durability and long-lasting performance. Each blade measures 9 inches in length, compatible with most standard reciprocating saws. This bulk pack of 25 blades is ideal for professionals and serious DIYers, ensuring you have the right tools for extensive projects.