Excellent tire deflator. Very easy to use with clear instructions and online video tutorials. I use this to bleed my Jeep WK tires from 35 (road) to 20psi (off-road) and it works quickly and efficiently. The built in meter has the same accuracy as my digitally calibrated meter so no complaints! Great deflator for the price, I used the ARB brand version and it's almost double the price and half the quality of the JACO RapidFlow. Take it.