Designed by legendary knife designer Blackie Collins for professionals first on the scene of vehicle accidents or fires; includes tool-functions to aid quick extraction of victims. Window striker is easy to arm and release with thumb lever and can also be used as a scribe for marking or identifying vehicles. 3-1/2" blade is 1/8"-thick for high-stress applications; blunt tip designed to minimize potential of unintentional penetration and can be used as a screwdriver or mini pry-bar. Extra-rugged 1/4"-diameter stainless steel pivot-point resists blade-handle separation; precision-ground scalloped edge acts like razor saw to quickly cut through seat belts, clothing, leather or canvas. Large thumb-stud allows for fast one-hand opening with either left or right hand, secure blade lock with one-finger release. Polypropylene handle with pronounced raised-texture for firm grip even when exposed to liquids. Easy to store at-the-ready with spring-steel pocket clip or use durable nylon-canvas protective holster with Velcro closure. Holster can be attached by loop-through belt loop or pocket/belt clip for fast on/off. Length overall 8" open, 4-1/4" closed; 4.8 oz. One-year warranty and Jack's Tool Shed worry-free Satisfaction Guarantee.