Double tooth design strengthens each tooth for longer life and improved durability. High-speed steel cutting edge Welded to alloy steel body. Thick, hardened backing plates prevent thread stripping. Cuts material up to 1-3/4" Deep. Will cut through a 2x4. Use for cutting in aluminum, brass, bronze, copper, plastic, stainless steel, wood, and other Compositions. Use DEWALT Mandrel model nose as indicated. Double tooth design strengthens each tooth for longer life and improved durability. This product is manufactured in United states. This product meets customer requirement.