DEWALT DW4806-2 6-Inch 10 TPI Straight Back Bi-Metal Reciprocating Saw Blade (2-Pack) Reinforced tooth for increased durability when cutting through nails and other foreign objects 6 degree hook angle for fast, aggressive cuts Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts Raker tooth design increases the tooth contact area for faster cuts One year warranty, one year service contract, 30 day no-risk trial