With a tall, high-speed strip that helps to reduce breakage and maximizing tooth life, DEWALT 2x long life wood cutting reciprocating saw blades use a patented extra-sharp tooth design to deliver fast cut rates in wood. An aggressive shank angle to help increase tooth contact. Taller high-speed steel strip reduces breakage and maximizes tooth durability. Patented tooth design utilizes shaper tooth geometry for faster cut rates. Aggressive shank angle increases tooth contact, maintaining cutting speed as blade wears for longer blade life in wood cutting applications.