Made from high-quality tungsten steel, OLFA 60mm Endurance Rotary Blades are manufactured with a proprietary metal hardening process that delivers two times the cutting life when compared to standard OLFA Blades. That’s up to 2100 yards of cutting. Honed to be razor-sharp, use 60mm Endurance Blades to extend the time between blade changes, saving both time and money. Cuts up to eight layers. Use the long-lasting blade to cut fabric, paper, leather, and more. Use an OLFA Self-Healing Rotary Mat to protect work surfaces and prolong blade life. Fits most 60mm handles.