ExtremaRatio BF2 CD BLACK pocket knife N690 steel 58HRC folding knife liner lockThe ExtremaRatio BF2 CD pocket knife is a large, durable folding knife designed for first responders and tactical users. Its N690 steel 58HRC blade provides strength, sharpness, and long lasting edge retention. You open the blade with the thumb stud, and the primary LINER LOCK secures the blade firmly. A secondary liner lock near the pivot ensures the main lock stays stable, even under heavy use. The slightly blunted tip prevents breakage during