21 TPI blade is designed for plunge and flush cuts of nails, nail embedded wood, copper, aluminum, nonferrous metals, mild steel, wood, plastic, drywall and other soft materials. Features a universal quick fit for use with Genesis, Porter cable, Rockwell, Craftsman, Rigid, Black & Decker, Dremel, Bosch, Chicago Electric, Craftsman, Fein Multimaster, Makita, Rockwell, Skil and other oscillating tools without the use of an adaptor. Size 1-3/4”.