MTech USA MT-A856BK 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 3.45 3.5mm thick black half-serrated stainless steel blade Black aluminum handle Pocket Clip for easy and safe carry Measures 4.75 inches closed