This 4-way manifold gauge set is suitable for filling and inspecting air conditioning systems by providing system pressure readings. It is suitable for use on all car A/Cs, as well as commercial and domestic A/C refrigeration systems. The colour-coded gauges are quick, clear and easy to read. The gauges are encased in a protective bumper to prevent damage. You can use the integrated steel hook to quickly and easily suspend the gauges. The manifold gauge set has a durable construction.