Lifesaver II Seat Belt Cutter features a built in O2 wrench. It cuts quickly through restaraining belts, clothes, etc. Easy to grip, even while wearing gloves. Cutter opens easily to replace blades. High impact plastic housing with surgical stainless steel blade. Lightweight, rugged and durable. Approximately 6 3/4" x 1 1/4". Fits in holsters, first aid kits, Fire/EMS coats, etc.