0.7L 300Bar 30Mpa 4500Psi 700cc Carbon Fiber Cylinder HPA Air Tank Diving Bottle Fiber Material: Carbon Fiber. Straight Thread Bottle Mouth: M18 1.5. Design Working Life: 15 Years. Hydraulic Test Pressure: 500 BAR. Working Pressure: 300 BAR. Tags: 300bar, 30mpa, 4500psi, 700cc, bottle, carbon, cylinder, diving, fiber, tank « 0.5L 500cc 4500PSI 30MPA Carbon Fiber Cylinder Diving Steel Bottle Tank M181.5 This Engine Block Is Made Entirely Out Of Carbon Fiber »