Olfa 60mm Rotary Replacement Blade ~ 5 Count; Circular rotary replacement blade for Olfa's 60mm rotary cutters. Used for quilting, sewing and general crafts. This blade is made of high quality tungsten carbide tool steel for for unparalleled sharpness and superior edge retention. Cuts up to 6 layers of fabric. Excellent for cutting heavier weight fabrics. For Original 60mm Rotary Cutter RTY3G and Deluxe 60mm Rotary Cutter RTY3DX.