These DEWALT 12" Reciprocating 10 TPI Saw Blades (DWA41712) come with taller high speed steel strips that helps reduce breakage and maximizes tooth durability and life. The aggressive shank angle increases tooth contact, maintaining cutting speed as the blade wears for long blade life. Pantented tooth design utilizes sharper tooth geometry for faster cut rates and specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts.