Durable, Easy to Use Extra Sharp Cutter Knife Best Quality Ceramic Blade ISO9001 SGS and So On Market: USA,Europe,Asia About Fengye Zirconium ... Size: 3",4", 5",6", 7", 1#cut knife, 2#cut knife, 3#cut knife, and the other ceramic knifeBlade Colors: white or black ... ½8Grain Sizeum<6Characteristic:1: Ceramic Knife has a high hardnes. It will sharp ever.2: The fine and close surface of blade would avoid ...