Extrema Ratio Dark Talon Folder. 5 7/8 closed linerlock. Black finish N690 stainless cobalt steel blade with dual thumb studs. Black anodized anticorodal aluminum alloy handles. Reversible pocket clip." 5 7/8" closed. Black finish N690 stainless cobalt steel blade with dual thumb studs. Black anodized anticorodal aluminum alloy handles. Reversible pocket clip.