This is the Pro-Tech TR-5 OPERATOR Tactical Response 5 with a constant glowing Tritium button Sterile Automatic Knife. ProTech Knives is proud to be the first choice of Police and Military professionals around the world. Pro-Tech Knives are built to serve and serve well. This TR-5 Automatic folding knife by ProTech is overall open length 9.25 inches with a features a 4" inch 154-CM Black DLC coated blade. Closed the knife is 5.25 inches. It weighs in at 5.5 ounces. The blade flies out of the handle with a push of the button and locks up tight. The 6061-T6 black aluminum handle has excellently designed for a perfect fit and a backup safety switch which only locks the blade in the closed position. It's ergonomic, compact, lightning fast and just an awesome all-around blade. Made in the USA.