Blue Reef's Double-Braided Hose, the Flexible, Durable, and Light Weight Low Pressure Hose that lets you forget it's there! The Braided Advanced Technology Hose with PE Fiber Braiding and Nylon Exterior, it has Superior Abrasion Resistance compared to Traditional Rubber Hoses. The Design results in Lightweight, Pliable Regulator Hose, that provide a much more Enjoyable Scuba Experience and Reduces Jaw Fatigue. Hose is Durable, Compact and much Easier-to-Pack in a Regulator Bag than a Traditional Rubber Hose with its 0.49" (12.5mm) O.D.The Regulator Hose is rated to 1500 psi (103 bars) Working Pressure and 6000 psi (413 bar) Burst Pressure. Hose has a Standard 3/8-24 UNF Male Threaded End and a 9/16-18 UNF Female End. Both Hose Fittings are manufactured from Chrome Plated Brass. The Hose comes in multiple lengths.