Santoku Knives - Popular Asian-type knife with a broad blade and an especially sharp cutting edge. The all-around workhorse in the kitchen, it can be used for preparing any kind of meat, fish and vegetable.Designed for professional chefs with a forged blade of high-carbon stainless steel that resists stains, rust and corrosion. Zwilling JA Henckels products, hand-crafted since 1731, set the world standard for appeal, function and style. The trustworthy quality and tradition of these riveted knives is easily visible by the full tang and the full length of solid steel. Classical styling and state-of-the-art technology in blade manufacturing combine to form the TWIN Pro-S Series. Product Features SIGMAFORGE one piece construction gives perfect geometry, high precision and improved stability of the blade and steel structure as well as improved cutting edge retention Laser controlled edge is sharper and stays sharper longer. Has a more consistent blade angle Friodur ice hardening offers maximum no-stain properties and more blade strength along with improved resistance to corrosion and pitting Super bolster provides weight, insures safety and adds balance Fully visible tang construction gives proper balance and great strength High carbon no-stain steel ensures no staining or rusting Hand honed for a long lasting edge Precision honed is sharper and stays sharper longer Triple riveted Novodur handles offer a durable, strong, smooth, comfortable handle that is perfectly balance Full warranty Made in Solingen, Germany Includes cookbook CD with 121 international recipes - 5 Model: 31120-143 Blade: 5 Total length: 10 5/8 Weight: 4 1/2 ounces 7 Model: 31020-183 Blade: 7 Total length: 12 1/4 Weight: 5 3/8 ounces Care Instructions No metal is completely stainless. Do not allow acidic foods (lemon, mustard, ketchup, etc.) to remain on the blade after use. This might cause some slight tarnishing. Should the blade show some signs of staining, use a non-abrasive metal polish for cleaning. Do not put knives in the dishwasher. Banging against other cutlery or pots and pans will nick the edge. Also, high heat and detergent are not good for the handle. Wipe the knife clean with a wet cloth and dish washing detergent. Dry immediately. Dry from the back of the knife to the edge. Do not cut through bone with knives (except cleavers). Do not use knives for poking, prying, separating or cutting semi-frozen or frozen foods. Do not abuse knives as screwdrivers or can openers. This not their designed purpose and may result in bending or breaking the blade or edge of the knife. Zwilling JA Henckels warranty does not cover misuse.