TAC Force TF-810H 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 3.5-inch, 3mm thick black stainless steel Tanto blade Black aluminum handle Pocket clip for easy and safe carry; glass breaker on end of handle; seatbelt cutter Measures 4.75 inches closed