U.S. Army A-A1019 Series Spring Assist Folding Knife, Half-Serrated Blade, 4.5-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock 3.25-inch, 3.2mm thick half-serrated stainless steel blade Black aluminum handle with U.S. Army medallion Pocket clip for easy and safe carry Measures 4.5 inches closed