For the production framing and building systems industry. Made for heavy industrial use. Sold in bulk quantities that allow the end user to save big money over having to have a handful of blades repaired and brought back in a week or longer. Our 7-1/4" x 24T blades have been tested extensively by several framing companies and last just as long if not longer than the name brand. Find a list of sizes, prices and quantities in the link below.