Introducing the Spyderco Endura 4 Lockback Knife in a sleek British Racing Green FRN handle. This knife features a flat ground satin plain edge blade made from Zdp 189 steel. The blade measures 3.75 inches in length and 0.13 inches in thickness. When fully open, the knife measures 8.75 inches in length. The handle has a thickness of 0.45 inches and is made from durable Fiberglass Reinforced Nylon (FRN). The locking mechanism is a reliable lock back design.