Panel includes gauges to monitor compressor pressure, plug pressure and test pressure, all in a sturdy steel case with a durable powder-coat enamel finish. Panel also has regulators to control plug and test pressure. Panel can be used with either 3/8 in or 3/4 in fill hose, accomplished by simply turning a valve. Panel is designed to work with air compressors fitted with either crow's foot or standard quick disconnect fittings.