The lifesaver Seat Belt Cutter features a built in O2 wrench.It cuts quickly through restraining belts.clothes.etc.Easy to grip,even while wearing gloves.Cutter Opens easily to replace blages.High impact plastic housing with surical stainless steel blade.Lightweight,rugged and durable .This Seat Belt Cutter is approximately 6-3/4"x1-1/4".Fits in holsters,first aid kits,Fire/EMS coats,etc.