For the money, the Cold Steel Bushman^® knives might be the strongest survival/outdoor knives in the world! Unlike most hollow handled survival knives, there is no joint or seam between the blades and handles that requires a mechanical fastener. Instead, the Bushman's^® blades and integral handles are each expertly cold forged out of a single piece of 2.5mm thick SK-5 high carbon steel. The resulting knives are expertly heat-treated and tempered to RC54 and, when subjected to our tests, have withstood over two tons of pressure on their blade/handle transition! Every Bushman^® blade has been carefully ground to an extra thin edge, and then honed and buffed by hand until razor sharp. The Bushman^® knives are versatile too! Their hollow handles will accept survival supplies or a variety of handle extensions which can maximize reach, leverage or ease of throwing. Feature continuously curved blades that are ideal for skinning, and will pierce, cut, slash, slice and shear like you won't believe. The Cold Steel Bushman knives come complete with our new Secure-Ex™ sheath which features a Ferrocerium Fire Steel; strike it on the spine of the blade and start a roaring campfire in no time!.