The Amflo 151 Standard Series Air Line Inflator Gauge features chrome plated castings with brass internal parts for longer life. Solid brass bar is calibrated 10 to 90 p.s.i. in 2 p.s.i. increments. This is a Swivel Dual Foot Chuck Inflator with 12'' hose. This is the standard unit for motor homes and other vehicles with smaller dual wheels.