The Diablo-DA double-action automatic was designed to be tough, sleek and comfortable in the hand or pocket. The automatic firing mechanism is easily activated by sliding the left scale (the side opposite the pocket clip) to the right towards the top of the knife. The Diablo-DA can also be opened manually, one-handed, using the ambidextrous thumb stud. The frame and internal components are heat treated stainless steel, making them extremely strong and durable. The blade steel is CPM-S30V that is heat treated to RC 60-61 for great edge retention and toughness. The handles are contoured select grade marble cocobolo wood. A stainless steel pocket clip provides convenient tip-down carry and quick access. The Diablo-DA is rugged, lightning fast and comfortable to carry.