Haskel AG-75 single stage, single acting gas booster, 75:1 ratio. Max. Gas Outlet: 11,250 psi.Gas Inlet/Outlet Connections: Interchangeable 3-3/8"SAE or 1/4"- H/P (BuTech) Both Ports. Weight: 12 kg. Haskel's pneumatic gas boosters are ideally suited for gas pressure increases, high-pressure gas transference, cylinder charging, and scavenging.