Extrema Ratio Selvan Fixed Blade KnifeDesert Tan Sheath System EX129SELD. Its a modification of the ONTOS a military survival knife designed to enhance its effectiveness as a civilian tool. A longer handle and a heavier blade enable enhanced chopping and cutting action. The improved survival kit (to be bought separately) includes: whistle pocket chain saw water purifying tabs compass copper wire fireball flint and striker LED light 2.5 mts paracord and whetstone. The Selvans Expeditions unlike its original model RAO II It has a BHLER N690 (58HRC) blade steel with MIL-C-13924 burnishing and a superficial stone washed finishing (DARK STONE finishing). A longer handle and a heavier blade enable enhanced chopping and cutting action. It comes with a desert cordura sheath with MOLLE system a safety carry shoulder belt a mini puch containing a paracord with flammable filament which can be used in case of emergency and/or difficult climatic conditions and a Firesteel for lighting fires. Specifications for Extrema Ratio Selvans Expedition 6.3in Fixed Blade Knife: Manufacturer: Extrema Ratio Blade Length: 6.3 in Overall Length: 12.3 in Blade Shape: Tanto Blade Material: Bohler N690 Stainless Steel Serrated: Plain Handle Material: Forprene Blade Thickness: 0.25 in Weight: 1.98 lb Package Contents: Extrema Ratio Selvans Expedition 6.3in Fixed Blade Knife Extrema Ratio EX129SELD: Selvan Fixed Blade KnifeDesert Tan Sheath System