Intercomp's "Fill, Bleed, and Read" Air Gauges attach directly to your air or nitrogen hose and have transformed a tedious process into one smooth and easy operation. Standard features include a high quality, 4" pressure gauge with rubber protective boot, a 22" Hose with a high quality swivel nozzle, and an industrial-grade bleeder valve. The air chuck never leaves the valve stem.4" Air Pressure Gauge0-30 x 1 PSI