The Freeman Analog Tire Inflator with Oil-Filled Pressure Gauge provides precise PSI readings, offering a superior performance compared to a traditional dry pressure gauge. The oil-filled gauge mitigates the effects of vibration, prevents internal corrosion and lubricates all moving parts, making it easy to accurately monitor the pressure of your tires or other equipment. When used in conjunction with a pneumatic compressor, this pressure gauge makes it easy to inflate equipment at home or in the shop, extending the life of vehicle tires and optimizing gas mileage. The hourglass brass chuck is corrosion-resistant and securely locks on tires to prevent air leakage, and the 20 in. flexible rubber hose and swivel hose connector make it easy to use in tight spaces. Lightly squeeze and hold the trigger at the first position to deflate, or completely depress the trigger at the second position to inflate. This tool is constructed of a durable, lightweight composite nylon and rust-resistant fittings to ensure a long product life, and it is backed by Freemans 1 Year Warranty.