Right-Handed model of the Martelli 45-mm Ergo 2000 Rotary Cutter. If you have problems with arthritis, carpel tunnel syndrome, tendonitis, hand fatigue, neck or arm pain, then the Martelli Ergo 2000 Rotary Cutter is the only cutter for you. The Ergo 2000 has been ergonomically-designed to be held in a natural position when cutting. The whole arm and hand evenly distributes all of the pressure, with no stress on any joint. Further, the Ergo 2000 allows for easy maneuverability while cutting, even when doing round or scalloped cuts that are not straight. With the flip of a finger on the spring-loaded guard lever, you can quickly shut the guard for safety. Roll the Ergo Cutter on the mat and it will automatically open again.