Ontario MK 3 Navy Knife is manufactured by Ontario Knife Company in New York as per the U.S. Government specifications. The Ontario Knife Company is a worldwide renowned producer of wide ranging and comprehensive products in the cutlery industry. This knife has an 6" black oxidized 440A Stainless Steel blade with a plain edge. The handle is made of molded high impact black plastic. The blade is tough and has a hardness of 49-54 HRC. It comes with a sheath which has a brass belt and a hanger loop. The knife when closed is only 3.3" long. The overall size is 10.75" and it weighs: 11 oz.