Protech Custom Knives TR-4 S1 Tactical Response 4 Automatic Knife with a 4" stonewash blade featers a 2 tone 416 stainless steel frame with brushed sain faces and stonewashed edges. The button is black lip pearl. This TR-4 comes with a sliding safety and a black finished glass cutter, inegrated lanyard hold and titanium pocket clip. The blade is 154-cm stainless steel. It includes a nylon carry sheath. The overall open length is 9 1/4 inches and closed is 5 1/4". This is one sweet beauty! Made in the USA!