ARB E-Z Analogue Tire Deflator W/ Gauge features unique, patented design allows for removal of the valve core for rapid tire deflation This analogue tire deflator provides accurate tire reading via the simple movement of a sliding valve The analogue tire deflator has corrosion resistant brass-stainless deflator tool This analogue tire deflator has quality bronze bourdon tube gauge design ensures accuracy is not affected by changes in temperature, humidity or altitude The analogue tire deflator has fully geared, solid brass precision movement This analogue tire deflator has easy to read dial with 1 pressure per square inch increments The analogue tire deflator includes protective canvas pouch and instruction sheet