A Lower Pressure reg. Made specifically for Paintball guns that run on 400 psi or less. Perfect as a secondary or primary regulator. Works on HPA or CO2. Adjustable from 0 to 400 psi. 92:1 Ratio Faster recharge rate with more consistency at lower pressures. Made for markers like: Intimidator Autococker Ion Matrix Impulse DYE Proto, DM4, DM5, ICD Freestyle Bushmaster Shocker & Odyssey. Yes, you can use your regulated 4500 PSI tanks with it. Input on the side, 2 outputs on the other side and top.