This is the Invictus 1804 automatic knife Prometheus Design Werx with a Stonewash blade. by Pro-Tech Knives. It's overall open length is 8.19" with a blade length of 3.47" and a cutting edge of 3". The blade is 154CM stainless and the Protech Invictus comes with a slide safety. The handle is 6061-T6 aircraft grade aluminum with milled grooves for additional traction as well as a lanyard hole. Comes with a deep carry tip up right carry pocket clip. Weighs in at 5.80 oz. (The firing button is a red G-10 material and this awesome ProTech knife was created with military and law enforcement officers in mind.)