The TK15 is a tactical dive knife built around a single piece of marine-grade stainless steel that?s been machined to achieve the ideal balance of strength and weight. Its polished surface lets the water drain easily and prevent oxidation. The thickness of the stainless steel is consistent from one end to the other, creating a high level of stiffness. The blade features a lower smooth-edge and an upper serrated edge close to the handle to maximize control of the cut. There?s also a shackle key and a line cutter. The knife comes with a heavy-duty handle and a fiberglass-reinforced polyamide sheath with nylon straps. Also included is a SCUBAPRO branded hand cover with bungee for securing the knife to the hand in critical dive conditions.