The AirSept A/C System Diagnostic Flush Tool, No. 90022, features a large, clear sight glass that lets technicians see, in real-time, exactly what is passing through the tool as they are flushing the system. The tool also features a dual glass system. A clear outer plastic sleeve protects the inner sight glass from damage due to the everyday wear and tear of an automotive service environment. AirSept’s A/C System Diagnostic Flush Tool kit includes the tool, plus two 36” A/C service hoses, so technicians can monitor flow through the tool without having to stoop under the hood.