The Pro-Tech Dark Angel knife is a single action out the front knife with the great quality that Pro-Tech always comes through with. The Dark Angel has a double edge 154-CM steel blade. There is a safety to prevent the blade from depoying. The blade pops open hard with the push of the button. The back side of the knife has a pocket clip and each knife comes with a nylon sheath. Each knife is individually serial numbered. Our Dark Angel knives will start with the 3rd production run.