The Santoku knife has been called an Asian chef's knife in deference to its general utility at a variety of cutting tasks. The santoku has a straighter edge than a chef's knife, with a blunted sheepsfoot-tip blade and a thinner spine, particularly near the point. From 12 cm to 18 cm (5 to 7 inches) long, a true Japanese santoku is well-balanced, normally flat-ground, and generally lighter and thinner than its Western counterparts, often using superior blade steels to provide a blade with exceptional hardness and an acute cutting angle. This construction allows the knife to more easily slice thin-boned and boneless meats, fish, and vegetables. Many subsequent Western and Asian copies of the Japanese santoku do not always incorporate these features, resulting in reduced cutting ability. Some Western santoku-pattern knives are even fitted with kullens, scallops on the sides of the blade above the edge, in an attempt to reduce the sticking of foods and reduce cutting friction. A standard in Asian (especially Japanese) kitchens, the santoku and its Western copies have become very popular in recent years with chefs in Europe and the United States.