Boker's ceramic knives hold their cutting edge far longer than any other knives - for a lifetime of easy cutting. Lightweight blades and ergonomic handles allow for a firm comfortable grip and effortless cutting. There is little wear and tear on the cutting edge, and no corrosion or discoloration. This material is very unique and offers outstanding advantages as a blade material when combined with a functional, ergonomic design. Lighter and stronger than steel the ceramic blade can be as hard as diamonds. They stay sharp for longer and defy rust and stains. Join the connoisseurs who are excited by these knives!