The Gladiator Series 12.5 Devastator butcher's knife is one mean looking behemoth of a blade, engineered for causing utter devastation to large cuts of meat and bone it is a must-have for any butcher or huntsman. Weighing in at a sizable 1.5 lbs, with a 4mm thick blade, this knife is a menacing cross between a chefs knife, slicer and a cleaver.