4 1/2" closed. Satin finish AUS-8 stainless assisted opening standard edge drop point blade with dual thumb studs. Features S.A.T. (SOG Assisted Technology). This mechanism helps propel the blade open once the operator has initiated the one-handed opening action. Sliding bolt action with piston lock mechanism. Additional safety lock when blade is closed. Black Zytel handles. Lanyard hole. Ambidextrous clip device is easily interchanged and provides a low profile carry.