DEWALT DW4807 4-Inch 14 TPI Straight Back Bi-Metal Reciprocating Saw Blade (5-Pack) The product is 5PK4" 14TPI Recipe Blade Easy to use The product is manufactured in United States Patented tooth design utilizes sharper tooth geometry for faster cut rates Aggressive shank angle increases tooth contact, maintaining cutting speed as blade wears for longer blade life Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts