Kyocera Advanced Ceramic Revolution Series 4.5-inch Utility Knife and Y-Peeler Gift Set, Green The essential everyday kitchen tool set for the kitchen and beginning home cook at a value Ceramic blades are made from Kyocera's proprietary zirconia material produced in Japan for exceptional quality and beauty Ultra-sharp, pure advanced ceramic blades will maintain their edges up to 10x longer than steel blades Lightweight and easy to clean, the blades will not brown food, are rust-proof and resistant to acids Ideal for any peeling or cutting prep task in the kitchen