OLFA® Rotary Blade, 60mm, pack of 5. Circular rotary replacement blade for 60mm rotary cutters used for quilting, sewing, and general crafts. Larger size blade works excellently on heavier weight fabrics or to cut multiple layers with ease: cuts up to six layers of fabric. Blades are made of high quality tungsten carbide tool steel for unparalleled sharpness and superior edge retention. For Original 60mm Rotary Cutter (RTY3), Deluxe 60mm Rotary Cutter (RTY3DX) and Quick-Change 60mm Rotary Cutter (RTY3NS); also fits the Havel's Sewing 60mm Rotary Cutter. Can be used in industrial applications.