The legendary Zeagle 1st stage is complemented with a new high-performing flagship 2nd stage. The result, the best performing diaphragm regulator on the market today. Its balanced diaphragm design and environmentallysealed ambient chamber ensures top performance in any condition. INHALATION DIAPHRAGM provides superior tear strength and improved response time to breathing (super soft silicone molded over a low friction disk). IMPROVED EXHAUST VALVE ensures dryness and a lower exhalation effort. REDESIGNED FRONT COVER and inhalation effort control knob use comolded components that provide the necessary grip, soft touch and ease of use. Available in several color kits ZIRCONIUM-PLATED inlet tube and heat sink for superior corrosion resistance. CO-MOLDED SILICONE MOUTHPIECE for better fit and less jaw fatigue