Ewei's Homewares 4pcs Premium Ceramic Knife Set - 2pcs Kitchen Knives & 2pcs Blade Sheaths in Gift Box, Black Handle Its high hardness just second to Diamond. Ewei's homewares ceramic knife hold their original sharpness longer due to the superior strength of the zirconium dioxide blades. Lightweight, extremely well-balanced in the hand; Ergonomic handle reduces fatigue during repetitive cutting; Highly controlled grip. Blades are totally impervious to acids, juices, oils, salts or other elements;Never rust, no metallic taste or smell. Perfect for health conscious families. Less exposure to germs and bacteria because ceramic is non-porous and chemically stable. Safe & Healthy, non-toxic,comply with FDA, LFGB and CE certification. 4pcs ceramic set include: 1x 3" Paring Knife, 1x 6" Santoku Knive & 2 x Blade Sheaths