Doug Ritter's RSK Mk5™ (Ritter Survival Knife) is not a knife you would use all day for normal work tasks. But, based on Doug's philosophy that "if it isn't with you, it can't save you™," it is compact and light enough to fit in almost any small personal survival kit or stash-away location, yet robust enough that it's a knife you can bet your life on™. Doug is the founder of the Equipped To Survive™ web site www.equipped.org and an international authority on survival equipment. The RSK Mk5 is a collaborative effort based on Georgia knifemaker David White's custom Shrewd Survival Knife, itself the result of collaboration with Dr. Andrew Osbourne. Weighing in at less than an ounce, the skeletonized fixed blade sports a 1.75" wide-chord drop-point blade with a high flat grind. The high-carbon steel blade has Doug's preferred stonewashed finish for improved corrosion resistance. The ergonomic curved handle provides a secure and comfortable two-finger grip while a brightly colored nylon cord fob adds additional length and grip. Use it to make fuzz sticks, construct shelter, gut a fish, dress game or for self-defense. Whether it is wilderness or urban survival, the Mk5 will do its part to keep you alive and kicking. Includes a custom-fitted Zytel® sheath and a mint-size carrying tin along with Doug's suggestions for building up your own personal survival kit. Blade: Length: 1.75" (44 mm) Thickness: 0.12" (3.0 mm) Steel: 3Cr13, 52-55 HRC Knife: Overall length: 3.81" (97 mm) Weight: 0.9 oz. (26 g) RSK Mk5 Sheath: (included with knife) Material: Zytel Length: 2.25" (57 mm) Width: 1.47" (37 mm) Weight: 0.3 oz. (9 g)