Use the OLFA Endurance Rotary Blade when you need perfect precision cuts for your quilting projects. They last twice as long due to it's long-lasting blade which is made of high grade steel. It’s the perfect combination of precision and quality that you expect from OLFA: it cuts effortlessly and retains its edge longer. Olfa Endurance blades are available in both 60mm and 45mm sizes. Each package contains 1 OLFA Endurance Replacement Blade