DEWALT DW3778-5 3-Inch 32 TPI Sheet Metal Cut Cobalt Steel T-Shank Jig Saw Blade (5-Pack) The item is Dewalt 3" 36 TPI Metal Cutting T- Shank Jig Saw Blades - DW3778-5 [Misc.] Used for Power Tool Accessories, Blades - Jig Saw The product is manufactured in United States Unique curved tooth design minimizes stress points for longer blade life and faster cuts Cobalt steel (Bi-Metal) maximizes blade life and durability T-shank design fits all Bosch and DEWALT jig saws