This A/C Manifold Gauge Set is designed to test automotive or home air conditioning systems (using R134A Refrigerant) by comparing the "high side" and "low side" pressure reading to the manufacturers A/C system specifications. This A/C Manifold Gauge Set can be used to test, evacuate and fill automotive air conditioning systems. Color coding on gauges, valves and hoses to ensure correct installation.Sight glass and Transparent hose for viewing condition of refrigerant Quick-connect fittings Hign and Low Pressure safety valve Name: Air Conditioner R134A Multifunction Manifold Gauge Set Accuracy +/- 2% Application: R134A refrigerant Diameter: 2-1/2 in. Working pressure (psi) High Side 0-500 PSI, Low Side 0-120 PSI Transparent Hose Length 150cm Thread size 1/4 in. The item "R134a AC Manifold Pressure Gauge Set Automotive Air Conditioning Tool Kit" is in sale since Sunday, June 14, 2015. This item is in the category "Business & Industrial\HVAC\HVAC Tools\HVAC Gauges". The seller is "rhish2000" and is located in , . This item can be shipped worldwide.