Kyocera Revolution Series 4-1/4-Inch Utility Knife, Blue Handle Unrelenting sharpness:Unparalleled purity;Ultra lightweight Easy maintenance; just a quick rinse and wipe with a kitchen towel Designed for slicing fruits, vegetables and boneless meats Advanced ceramic blades stay razor-sharp 10 times longer than conventional steel blades Zirconia 206: Kyocera's proprietary advanced ceramic