The Estilleto is based on the ATKO design but it's been super-sized. Just push the button and the knife fires out the front of the handle. To retract the blade just press the button in and use the retracing lever to pull the blade back in. This out-the-front knife features a sturdy olive drab green anodized 6061 aluminum handle. Features a 154CM stone wash finished steel double edged dagger blade (plain). Great action, locks up nice and tight. The Estilleto has a pocket clip for easy carry (tip-down) and a safety to ensure the knife is not misfired.