Air Combination Unit(Regulator), Model Type: Standard, Port Diameter: 3/8, Appearance Color: Black&Silver, Relief Type: Relief Type, Pressure Type: High-Pressure Type, Pressure Gauge: External Pressure Gauge PG-40+Manifold, Pressure Sensor: Without, Flow Direction: Left¡úRight, Digital Pressure Sensor: Without, Bracket: Screw Fixed Type, Port Thread: G Thread