Disston E0114413 Blu-Mol High Speed Steel Jig Saw Blades With Universal Shank, 2-3/4-Inch, 70mm, 21 Teeth Per Inch Metal Cutting, Sold In Cards, 2 Units/Card Bi-Metal jig-saw blades are for cutting metals, steel and stainless steel Their high strength steel cutting edges are hardened for long lasting durability Made for heavy duty cutting in wood and metal