SKS Airchecker Digital Display Pressure Gauge: Presta and SchraderTire pressure is critical to performance. Not all pumps have gauges and many are not accurate. The Airchecker is quick and accurate. It features a swiveling dual valve head and an easy to read back lit display. Easy to read, large digital display shows either Bar or PSI readings Dual Head is Presta and Schrader valve compatible Reduction button allows tire pressure to be precisely regulated 0 140 PSI 10 Bar