1.sand or mirror finish ceramic knife; 2.hi-tech immersed,hard,sharp and durable 3.new ... .5"1pc 6"1pc 5"1pc 3" Safty: 1.cut with no metallic smell or taste and maintains ... metalic taste and smell.Material: 1.Blade made from advanced nano-grade zirconia,high-tech product;2.Hardness is HRC90, ... only secondly to the diamond ,super sharp and last longer. Advantages: 1. ...