ough Bimetal blades with power blast technology. Tooth geometry and manufacturing penning process minimizes heat build-up and improves tang strength. Easily cuts steel, stainless steel, nail-embedded wood, hardwood flooring, reinforced bar, conduit, cast-iron, and pipe.From the ManufacturerPerfect for heavy gauge metal, rubber and fiberboard. Sharp tough bimetal blades with power blast technology | Tooth geometry and manufacturing penning process minimizes heat build-up and improves tang strength | Easily cuts steel, stainless steel, nail-embedded wood, hardwood flooring, reinforced bar, Conduit, cast-iron, and pipe | Cuts through tough materials including nail embedded wood | Retains tough sharpness longer than the competition | Bi-metal construction, shatterproof | 5 pack