Extrema Ratio RAO Folder Black Ruvido EX0141RVB. 63" (14.3cm) closed. 4.75" (12.07cm) black MIL-C-13924 burnished Bohler N690 stainless tanto blade. Black textured aluminum handle. Lanyard hole. Extra safe locking device is a steel pin that is hand screwed into place locking blade open or closed. The sheath is an essential part of this weapon system: it holds a diamond-plate sharpener and enables user to carry the knife either in open position held in place by a cord and two clips or closed inside the front pocket. The sheath can be attached to tactical vests or common belts being MOLLE system-compliant. Boxed. Specifications for Extrema Ratio RAO Folder Black Ruvido: Manufacturer: Extrema Ratio Blade Length: 12.07 in 4.75 in Closed Length: 140.3 mm 5.63 in Package Contents: Extrema Ratio RAO Folder Black Ruvido