Its partially serrated tanto blade makes the COAST DX330 Double-Lock Rescue Team Operator Folding Knife a solid choice for work, recreation, and home useand its seat belt cutter and window breaker could save lives after a car or transit accident. The DX330 features a textured nylon handle with four large finger grooves for a firm grip, and thumb studs that allow the blade to be opened with one hand. COAST’s Double-Lock mechanism assures the knife won’t accidentally close when you’re working by preventing the liner lock from accidentally disengaging under strenuous conditions. The blade is made of 7CR17 stainless steel and measures 3.3″. Overall, the knife measures 8.1″ open and 4.8″ closed with a weight of just 4.2 ounces.