Zeagle's regulators are US made, built under strict controls for quality in our own factory, using state of the art equipment and procedures. Your regulator is one of your most important pieces of gear. No matter what kind of diving you do, you can do it better with Zeagle. Zeagle's F8 Second Stage Regulator is lightweight, compact and comfortable, with diver adjustable resistance controls, free-flow control, and built-in anti-freezing features. Based on the Zeagle Z Regulator, specific design changes have created a regulator that is resistant to free-flow on the surface, yet has incredible smoothness and ease of breathing underwater.