The S.O.L. Knife was designed by famed master knifesmith Kirk Rexroat. Kirk designed the 888 Professional S.O.L. Knife with an aggressive, compact double-edged blade, just the ticket for last-ditch S.O.L. emergencies or even opening your mail! Based on the famous OSS Thumb Daggers of WWII the 888 Professional S.O.L. Knife's blackened blade and partial serrations offer a tactical feel and look, balanced with everyday usefulness.