Martelli’s unique sharpening system has created a blade that is in it for the long haul. These blades will last approximately 3-5 times longer than ordinary blades. To maximize your blade life and efficiency in cutting, use it with Martelli’s ergonomic rotary cutter and one of their commercial-grade mats. When you replace a blade, make sure you discard the old one in a safe manner. A good way to do this is with one of the Martelli blade tins (purchased separately).