Salom&eacute; Idea@ 6-Piece Ceramic Knife Set+1 Advantage Holder (6-Piece+1Holder, Blue) Ceramic knife is super sharp, never need sharpening, it is 12 times hard than regular steel Ceramic knife has no metal taste when cutting delicate vegetable such as tomato Ceramic knife is Non-reactive with food ,keep original taste and color of fruit and vegetable Ceramic knife is easy to clean, no rust, hygiene and keep you away from germ and bacteria Your ceramic knife works best for slicing boneless meats, fruits and vegetables