KW-triO's 28 mm Rotary Cutter is easy for right-handed and left-handed users simultaneously. Ergonomic comfort grip handle. Ideal for cutting multiple layers of fabric, paper, leather, felt, etc. Special dot design to keep the operation firmly to avoid hand slipping. Safety lock button to retract blade once turning the button. Cut through multi-layers with a single stroke and leaving a clean finished edge. Having blade diameter 28mm. Can be used with types of blade types: Straight, Perforating, Pinking (as demonstrated in the image).