Lenox Bi-metal Jig Saw Blades - Ideal for Woodworking and Metal Cutting. PRECISION CUTTING - Super sharp to cut fast without deflection. SMOOTH FINISH - Ground to precision sharpness for straight cuts and a smooth finish. IDEAL FOR WOODWORKING - Designed for optimal performance in wood cutting, including hardwoods. SHATTER RESISTANT - Bi-metal technology flexes and resists breaking and extends blade life. Applications for this blade: Steels: 3/32" - 1/4" (2.5 - 6mm). Non-ferrous Metal: 3/32" - 3/8" (2.5 - 10mm).