Brass make to prevent rust or corrosion
No tools required, just screw on & off by hand
Can be used on any standard tyre valve stem
deflate tyres down to 6psi to 30psi in a few minutes
Air immediately releases from tyre once screwed on, stopping at present pressure level.

Specifications:
Colour:gold
Material:copper
Size:Outer diameter: 17.00mm total length 41mm

Package Contents:
4 * Brass Tire Venting Machine s