Master USA MU-A027BK Spring Assist Folding Knife, Black Straight Edge Blade, Black Handle, 3.75-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock 2.75-inch, 2.5mm thick straight edge stainless steel blade Black nylon fiber handle Pocket clip for easy and safe carry Measures 3.75 inches closed