Aqua Lung Big Squeeze Dive KnifeOur famous Squeeze Lock dive knife but in a more business like, larger knife. With a 4 inch blade (overall length 9 inches), it is ready to serve in the event of an emergency. The patented release mechanism locks the knife in the sheath and easily frees it with a squeeze. Features: Secure. Our Squeeze knives are easy to remove intentionally by squeezing the molded grip, but nearly impossible to accidentally un sheath. Perfect for Scuba. 4 blade; 9