MTech USA MT-A928BK Spring Assist Folding Knife, Black Half-Serrated Blade, Black Handle, 4.75-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock 3.75-inch, 2.8mm thick half-serrated stainless steel blade Black aluminum handle with rubberized coating Pocket clip for easy and safe carry Measures 4.75 inches closed