Ginsu"s serrated blades perform as accurately as fine edged professional cutlery with the added convenience of never needing to be sharpened! Our exclusive Symmetric Edge Technology integrates identical serrations on each side of the blade for a straight, even cut. Many chefs prefer this maintenance free design that is perfect for left and righthanded users. Ginsu knives have commercial quality stainless steel blades with full tang polymer handles that are triple riveted for strength and durability. Limited lifetime warranty.