Ikea 365+ Utility Knife, Stainless Steel 15-year Limited Warranty. Read about the terms in the Limited Warranty brochure. For easy slicing and trimming. Size 6 " The knife is very durable, balanced, and easy to clean, since it is made of a single piece of stainless steel. Made of molybdenum/vanadium stainless steel, which is why the knife stays sharp for a very long time. Grooves on the handle give a firm, secure grip, and keep the knife from sliding in your hand.