Circular rotary replacement blade for the 60mm rotary cutters used for quilting, sewing, and general crafts. Cuts up to 6 layers of fabric. This blade is made of high quality tungsten carbide tool steel for unparalleled sharpness and superior edge retention. 5 blades per pack. Good For: general quilting, sewing and craft projects. Larger size blade works excellently on heavier weight fabrics or to cut multiple layers with ease. Can be used in industrial applications.