Advanced Ceramic Series. Ultra pure ceramic blade helps prevent browning of fresh fruits and vegetables. Eliminates transfer of metallic ions that can alter the taste and smell of fresh foods. Precision-engineered design provides superior strength, maintaining sharp edge up to 10 years. Lightweight, balanced design reduces muscle fatigue. Easy-to-clean, non-stick blades. Ergonomic, soft grip, slip-resistant handle provides unparalleled balance and comfort. Sheath included with each ceramic knife.