The Sparco digital tire pressure gauge is 2 1/2 inches in diameter with an easy-to-read display that can be switched between bar and psi. The pressure gauge comes with a flexible pressure line with an aluminum grip and a protective rubber boot. Supplied in a protective case to reduce the risk of damage in transport Protective rubber boot in case the meter is accidentally dropped. Perfect for motorsports use Switchable between psi or bar The gauge is lightweight and has a pressure release valve so you can adjust your pressures with ease. The included case is ideal for when the gauge is not in use or when in transit, keeping it safe from any potential damage. Pressure range: 0-100 psi / 0-7.0 bar