J.A. Henckels Four Star Series 7 inch Santoku knife with hollow, scalloped blade. Polypropylene handles for comfort and balance. Special patented Henckels blade process enabling knife edge to stay sharper longer and re-sharpen easier. German steel, no stain blade with hollow edge which allows vegetables and meats to fall off the blade when sliced. Very popular knife for asian style cooking easily slicing various foods very thin. Slim, comfortable polypropylene handles are hygenic and food safe. Patented Friodur ice hardening process results in a strong, no stain blade. Dishwasher safe, although J.A. Henckels strongly recommends hand washing knife after every use. Maintain and re-sharpen knife edge with only a J.A. Henckels sharpening steel. Full warranty.