SOG Specialty Knives' Bi-Polar is a dual-assisted knife with twin blades. Using patented S.A.T., each blade is propelled out once the operator has initiated the blade opening action. The Bi-Polar provides an ideal combination with the main blade, V-Cutter and glass breaker. SOG's V-Cutter easily cuts seatbelt material, paracord, fishing line, strip most types of wire, zip electrical cable sheathing, open packages, cut nylon banding straps, etc. Dual blades, double lockbars and twin safeties all work to lock the blades closed or double lock the blades open.