MTECH USA MT-A865 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 3.5-inch, 3mm thick half-serrated stainless steel blade Black and Red aluminum handle with Fire Department medallion Pocket clip for easy and safe carry Measures 4.5 inches closed