SOG Bi-Polar- Rescue, V-Cutter & Serrated - DISCONTINUED Get this great deal while supplies last! The Bi-Polar is very capable. It's the first dual assisted knife with twin blades. Using patented SOG Assisted Technology™, each blade is propelled out once the operator has initiated the blade opening action. It might be the perfect rescue knife, whether used by law enforcement, emergency medical personal or in your garden releasing the grip of a tenacious vine. We think the Bi-Polar is the perfect combination of might and right with main blade, fully serrated secondary blade, and glass breaker. Dual blades, double lockbars and twin safeties all work to lock the blades closed or double lock the blades open. Expand your world with the Bi-Polar. The Rescue model features the V-Cutter, sheepsfoot serrated blade and glass breaker tip.