The TR-4 knife stands out with its unique "espresso" double-blasted, DLC coated D2 steel blade. The blade has a subtle earth tone color and a smooth surface finish that sets it apart from other knives. As the largest member of Pro-Tech's Tactical Response line, the TR-4 offers a generous handle design that ensures a secure grip, even for those with larger hands. This knife is reliable and dependable, firing hard and locking up securely. It also features a tip-up carry pocket clip and a front-mounted sliding safety for convenience.