DEWALT DW3726H2 3-Inch 24TPI Thin Metal Cut High Speed Steel U-Shank Jig Saw Blade (2-Pack) Unique curved tooth design minimizes stress points for longer blade life and faster cuts Cobalt steel (Bi-Metal) maximizes blade life and durability U-shank fits DEWALT and other universal shank jig saws Increased cutting contact for more precision One year warranty, one year service contract, 30 day no-risk trial