Guy Fieri Gourmet Triple Riveted Santoku Knife with Tattoo Sheath (5-Inch) This Santoku knife is the perfect tool for chopping, slicing and mincing. Each blade is forged from superior quality high-carbon steel, with kullens (dimples), that help prevent food from sticking to the blade. The ergonomic, comfortable, triple riveted handle is perfectly balanced and weighted for the ultimate control. This 5-inch Santoku knife comes with a protective sheath for safe storage. This product is not dishwasher safe. Hand wash with warm water and a mild detergent; rinse and dry immediately.