TAC Force TF-640 Series Assisted Opening Folding Knife, Two-Tone Tanto Blade,  4-1/2-Inch Closed Spring assist folding knife offers rapid one-handed deployment, locks securely into place with liner lock Two-tone stainless steel tanto blade Aluminum handle with seat belt cutter and glass breaker for emergencies Comes complete with a pocket clip for easy and safe carry 4-1/2-inch closed length, 3-inch blade length with 3mm thickness