The Cheese knife with the holes in the blade is a special and convenient device to cut any kind of cheese. It does not stick or crumble during cutting. Kitchen knives DEMI CHEF are made of steel 5Cr15MoV, hardened up to HRC 57 on Rockwell scale. These knives are strong, durable and perfect for everyday use. Double side symmetrical sharpening of the blades simplifies cutting and slicing. Each item has stainless steel bolster for a perfect knife balance. Polypropylene handle is fixed with 3 even rivets properly. Its ergonomi? shape helps handles to stay non-slippery and comfort for a good while. Hand wash only.