The Steel Custom TR-4 Tactical Response knife is a solid design with wrist kicking action. This TR-4 is part of a limited run of 15 knives. It features a Chad Nichols "Rain Drop" Damascus blade. The two-tone 416 stainless steel frame has brushed satin faces and stonewash finished edges and recesses. The firing button is fitted with a black lip pearl insert. The TR-4 has a semi-open frame design with a sliding safety, glass breaker, integrated lanyard hole and titanium pocket clip. This is a great automatic knife that is sure to be a valued collection piece!