ALL-TOP 4x4 Digital Tire Deflator Kit Professional Tire Pressure Gauge Air Down Master Rapid Tire Deflator (250 PSI) The digital tire deflator features a LED backlit screen for enhanced visibility day and night. Allowing you to measure pressure in PSI, KPA, Bar, and Kg/cm². Accurately measures a range from 0-250 PSI (0-17.2 Bar; 0-1724 Kpa; 0-17.5 kg/cm²).