Tru-Flate (17-533 20-120 PSI Straight-On Truck Tire Gauge High quality tire gauges are precision manufactured Provides the long life accuracy and performance to surpass the requirements of the most demanding applications Ideal for high pressure tires on large trucks with budd wheels, step vans, pickups, air shocks and any difficult-to-reach high pressure (20-120 PSI) reading Perfect for inner wheels on duals Pocket-sized with dual PSI/kilopascal calibrations in large easy to read numbers