This is a CO2 gas regulator designed to control and monitor the pressure of carbon dioxide gas coming from a CO2 cylinder. It features dual pressure gauges: one shows the cylinder (tank) pressure, and the other displays the regulated output pressure. The body is made of durable brass for safe high-pressure handling, and the large control knob allows precise adjustment of gas flow. It is commonly used for welding, beverage dispensing, carbonation, laboratory use, and industrial applications, ensuring smooth and stable CO2 delivery.