S & G Tool Aid's Tire Inflator with Window Gauge No. 65120, is an easy-to-read gage with a built-in magnifying window lens. The gage is calibrated from 10 to 120 psi in 2-lb. increments. A three-function lever is used to inflate tires, read pressure and release air. A 360-degree swivel is located between the 15" air hose and 6-inch chrome-plated dual head chuck. The brass valve is corrosion resistant. The unit has durable aluminum construction and a 1/4" NPT female air inlet.