Air Breathing HoseEsdan Oxyflow is an Australian made, non toxic, food grade, low odour air breathing hose for scuba diving, hookah diving, spray painting booths and sandblasting applications. It has up to 348 PSI working pressure and meets Australian standards AS1716 and AS2299. It comes with a 2 year warranty and is available in 8 mm and 10 mm inner diameter sizes and and 20 to 300 metre lengths. Meets Australian standards AS1716 and AS2299 Up to 348 PSI working