This is a hand-held digital preset oil meter. Preset the amount to dispense and the nozzle with automatically shutoff at that amount. Dispenses in pints, quarts, liters, and gallons. Recommended for motor oil, gear lube, ATF, and glycol. Has a 1/2″ NPT inlet/outlet. Comes with 1 year warranty. Has a 9v battery. Fluid flow range: 0.3-9.2gpm. Pressure range: 7-1000psi. Temperature range of 14-140 degree F. Weights 3.3 lbs.