The Lenox 6″ x 18 TPI Bi-Metal Reciprocating Blade is a high-quality cutting tool designed specifically for cutting through metal. With a durable bi-metal construction, this blade is perfect for a variety of cutting applications. This 5-pack ensures you have multiple blades on hand for all your cutting needs, making it a convenient and practical choice for professionals in the building and construction industries. The trusted Lenox brand ensures top-notch performance and reliability when using this blade.