Stiletto knife with a smooth edge on one side and serrated on the other. The stainless steel at the base of the blade ends at the end of the handle to increase strength and make the knife solid. The stainless steel used is a high carbon content type of molybdenum chromium which allows for a very high degree of sharpening. The steel is treated cryogenically to increase its hardness and resistance to wear, scuffs and corrosion. The blade features a slit to lock the tails of spear shafts should they get stuck between rocks. Another hole in the handle features a loader for pneumatic spearguns.