metal tire gaugeblister packmo?q 500pcsTyre Pressure GaugesIn the interests of safety, tyre pressures should be checked at least once a week when the tyres are cold. This is because the manufacturers recommended pressures are based on cold tyre readings.Dial Type Tyre Pressure GaugeThis push-on type pressure gauge is graduated in psi and bar up to a maximum of64psi (4.5bar).The reading is held until the release button is pressed