Introducing new optimized NX Series large bolt snaps from XDeep especially designed for scuba divers. In demanding environments even wrong size or type of bolt snap can be annoying or create problems. Once again XDeep challenges this issue by rethinking bolt snap for scuba diving. Entirely new construction that introduces few simple yet effective solutions to common scuba bolt snaps problems. Perfect for stage cylinders, deco cylinders and sidemount cylinder bottom clips.