Each blade is 4 inches long, flat ground, about 1-1/8 inches wide, and about 1/8-inch thick. Each SARD blade is shaped from a special patented heat-treated 440 stainless steel protected with black KG160, a tough military coating. This patented heat treatment process is called “vario and ice hardened” and the blades come out at HRC 58-60. Each blade has a 1-inch section of serrations to help cut through fibrous materials. At the rear of the blade is a downward projection that forms a finger guard and it is grooved on the rear to provide a better gripping surface. The blade has a thumb-opening stud (collar) on each side of the blade and the knife is fully ambidextrous.