Problems with arthritis, carpel tunnel syndrome, tendonitis, hand fatigue, neck or arm pain? Then the Martelli 2000 Rotary Cutter is the only cutter for you! Unlike traditional rotary cutters, the Ergo Cutter is held in a natural position with your arm and hand evenly distributing all of the pressure. Cuts round, scalloped or patterned shapes. Safe, automatic spring-loaded guard closes with a flip of a finger. Makes blades last five times longer!