The Estilleto is based on the ATKO/PARA-X design, but it's been super-sized. Just push the button and the knife fires the 5.5" blade out the front of the handle. To retract the blade just press the button in and use the retracting lever to pull the blade back in. This out-the-front knife features a sturdy digi camo anodized 6061 aluminum handle. Features a DLC finished 154CM steel with a double edged dagger blade with plain edges. Great action, locks up nice and tight. The Estilleto has a pocket clip for easy tip-down carry and a safety to ensure the knife is not misfired.