HPA System Tank - Phoenix Pro Series 1.1L Composite / 0.9kg / 207mm x 110mm Thread - 5/8-18 UNF Internal Regulator - Phoenix Twister Input / Output Pressure - 4500 / 800 psi Thread - 5/8-18 UNF On-Off Valve / No Adjustable Output External Regulator - Wolverine STORM Cat. 5  Operating Range - 60-180 psi Line ~1m (Foster US)