TAC Force TF-723FD Assisted Opening Tactical Folding Knife, Black Half-Serrated Blade, Red Black Handle, 4-1/2-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock Black half-serrated stainless steel blade Aluminum handle with seat belt cutter, and glass breaker on the end Comes complete with a pocket clip for easy and safe carry 4-12-inch closed length, 3-1/4-inch blade length with 3mm thickness