The Estilleto is based on the ATKO design, but it's been super-sized! Just push the button and the blade 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-T6 aluminum handle with safety and tip-down carry pocket clip. The DLC finished 154CM steel double-edged dagger blade has plain edges. The Estiletto has great action and locks up nice and tight!