The Topeak Shuttle Digital Gauge takes away any guess work providing you with accurate pressure readings of up to 300psi, ideal for your tyres, fork or rear shock. Rotatable head with view of the display from any angleAuto-off function1 x CR2032 battery includedDigital gauge reads up to 300 psi / 20.7 barUnits; psi, bar, kg / cm2The Shuttle Digital Gauge can be used in conjunction with a pump or alone and the head works with Presta, Schrader or Dunlop valves for great compatibility.  A thumb lock lever secures the gauge onto the valve head and ensures an airtight seal. An air release button allows for quick and easy fine tuning.