... fast delivery 5.warranty: 1year 2012 newest mirror blade wooden handle folding ceramic knife Model:MFW-3.7Blade Material:Zirconium OxideHandle Material: ... 10mohs).Supper sharp and longer life than the traditional steel knife,with no need of sharpening for years. Stain and rust ... for cutting hard ,frozen or broned food.Please use with a plastic or wooden cutting board ,Avoid cutting on marble ,stone, ...