Even when your projects seem to last forever, this Endurance Rotary Blade by Olfa will still produce the sharpest cuts! Expertly designed to last twice as long as regular rotary blades, this high-quality blade will effortlessly glide through multiple fibers and layers, each ending with the same precise cut you know and love. Meant to be paired with item number 427261, Olfa's 60mm Ergonomic Rotary Cutter, this long-lasting blade comes pre-packaged in a plastic case for your safety, making it the perfect investment for big projects or the small business owner.