The Ashville Steel Paragon Para-X OTF automatic knife is a single action knife that is the next generation of the ATKO-10 with a rapid strong out the front fire with just the push of a button. Just press the button in and use the retracting lever to pull the blade back in to close the knife. It has a full plain blade on the bottom and a full serrated top blade. The Para-X comes with a safety and pocket clip for tip down carry. The overall open length is 8.75 inches with a 3.5 inch blade and closed is 5.19 inches. 4.2 ounces. Blade is made of S30V stainless steel and the handle is anodized 6061-T6 aluminum. Made in the USA.