Extrema Ratio NK1 Neck Knife Desert Warfare Fixed Blade Knife 5in Overall 1 3/4in Blade One Piece N690 SS Construction w/Desert Warfare Finish. 1 3/4" blade. One piece Bohler N690 stainless construction with Desert Warfare finish. Enlarged lanyard hole. Molded tan Kydex neck sheath with Desert Warfare cord lanyard. Specifications for Extrema Ratio NK1 Neck Knife Desert Warfare Fixed Blade Knife: Manufacturer: Extrema Ratio Knife Application: Neck Knife Package Contents: Extrema Ratio NK1 Neck Knife Desert Warfare Fixed Blade Knife Extrema Ratio 0123-DW: NK1 Neck Knife Desert Warfare Fixed Blade Knife 5in Overall 1 3/4in Blade One Piece Bohler N690 SS Construction With Desert Warfare Finish Enlarged Molded Tan Kydex Neck Sheath