Kyocera Revolution Series 4.5 Inch Utility Knife, Plus Gift with Purchase Kyocera Knife Sheath Cover, Black (Black Handle / Black Blade) Set of 1-Kyocera Revolution Series 4-1/2-Inch Utility Knife, Black Handle by Kyocera Plus 1-Sheath by Kyocera Free Knife Sheath for Santoku Knife with Purchase Kyocera Ceramic blade ground to microscopic precision by diamond wheels for rock-like edge with excellent sharpness retention Totally impervious to acids, juices, oils, salts or other elements; will never rust Lightweight, extremely balanced in the hand; ergonomic handle reduces fatigue during repetitive cutting