TAC Force TF-525 Series Assisted Opening Folding Knife, Black Half-Serrated Blade, 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 for emergencies; Police Department logo Comes complete with a pocket clip for easy and safe carry 4-1/2-inch closed length, 3-inch blade length with 2.8mm thickness