Features:  The oxygen pressure gauge is mainly used for industrial oxygen decompression.  Mainly made of aluminum alloy material, compact size, good sealing ability, rustproof and durable.  Adopts automatic air release valve, it will reduce O2 pressure automatically for high output pressure.  With large and thick rotary knob, easy to adjust the air pressure.  The pressure gauge protected by rubber cover has large dial and clear scales, easy to read.    Note: Size and color may be slightly different due to manual measurement and different light conditions. Thanks for understanding.    Specifications:  Main Color: Green  Main Material: Aluminum Alloy  Measuring Range: 0-2.5 MPa  Outlet Pressure: 0.5-1.0 MPa  Item Size: 18 * 14 * 7.5cm / 7.09 * 5.51 * 2.95in  Item Weight: 650g / 1.43lbs  Package Size: 18.5 * 15 * 8.5cm / 7.28 * 5.91 * 3.35in  Package Weight: 920g / 2.03lbs    Package List:  1 * Oxygen Pressure Gauge