One gauge shows pressure for carbonating and dispensing.<br> The other gauge displays how much Oxygen is left.<br> Easy to use dial for pressure adjustment from min to max.<br> Pressure safety relief valve which can be pulled to release pressure when disconnecting.<br> brass body, accurate machining, chrome plated , more durable.<br> Economy style flow meter regulator.<br> Single stage piston design.<br> Machined brass body.<br> Combination of regulator and flow meter as one unit.<br> Polycarbonate flow tube and outer cover are impact resistant for maximum durability.<br> Compact construction.<br> Designed for MIG & TIG applications and provide accurate regulator of gas flow.<br> Dual scale gauge with unbreakable polycarbonate lens for durability.<br> Measuring range: 0-2.5(MPa)<br> Material: copper<br> Color: as shown<br> Package Contents:<br> 1 x oxygen meter<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.