Gerber LMF II Survival Knife, Black [22-01629]. Rugged and reliable design in all our products. Can be used in various military, hunting, survival, tactical, industrial and outdoor situations. All products are field tested. Partially serrated blade. Plexiglass punch. Can be used as a hammer. Converts to a spear. Sheath has integrated sharpener. Customer Service number is 800-950-6161.