The BODUM CHEF Knife Line consists of 24 different knives, a sharpening steel and a carving fork. They are handmade of the finest Japanese blade steel: Molybedenum/Vanadium stainless steel (AUS6M), hardened to HRC 57° or 420J2 stainless steel, hardened to HRC 50°. The handle is cast in stainless chrome steel 18/8 and has a special die-cast texture for a non-slip effect. Even the BODUM CHEF Knives should be sharpened regularly: hold your knife at an acute angle towards your sharpening steel, then sharpen both sides of the blade alternately with consistent pressure. By the way: serrated knives don’t need re-sharpening.Cuts and chops meats, vegetables, herbs. Designed after its Chinese role models this knife chops big pieces of meat and vegetables and it cuts and minces them as finely as your recipe asks for.About the care of the BODUM CHEF Knives: good knives dont belong in the dishwasher. Finest grinding particles in the dish soap affect the blade and make it edgeless. Good knives should be cleaned with a damp towel and then wiped dry. With the proper care the BODUM CHEF Knives will last a lifetime.Size: 18 cm, 7 inches