The product is 5PK 3" 32TPI Jig Blade. Easy to use. The product is manufactured in United States. Includes (5) Blades Features 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 DEWALTjig DEWALT DW3778-5-3-Inch 32 Tpi Sheet Metal Cut T-Shank Jig Saw Blade (5-Pack)