The Flash family of knives feature SOG Assisted Technology (S.A.T.), which employs a powerful piston lock that is easily released with a sliding button. The Flash II knife (Partially Serrated) comes standard with glass-reinforced nylon (GRN) handle and 1/2" serrated blade. All Flash knives come standard with SOG’s patent pending, reversible bayonet mounted clip that ensures the lowest, most discreet carry possible. We also had the foresight to incorporate an additional safety lock that gives added security when the blade is closed.