L.S. Starrett’s 3X Power series of Bi-Metal Reciprocating Saw Blades are reportedly highly resistant to breakage, have a reinforced shank, and are engineered for use on corded and cordless saws. The series includes blades for cutting wood, metal, multiple materials, and heavy-duty materials. The manufacturer claims these blades can make more cuts than competitive blades. The line’s King Cut 3X Heavy-Duty blades feature heat-treated teeth with a pitch set designed to slice through any material, according to Starrett. starrett.com