4pcs Brass Tire Deflators Kit Adjustable Automatic Tyre Deflator

Rapidly deflates tyres down to 0 psi to 90psi in a few minutes.No tools required, just screw on & off by hand.Can be used on any standard Schrader tyre valve stem.Adjust tyre pressure from 0 - 90psi, in 3 psi increments.100% solid brass make to prevent rust or corrosion.Air immediately releases from tyre once screwed on, stopping at present pressure level.