Works as an extension to your spares valve stem making it more accessible.
One end screws on to the valve stem on the tire.
The other end is placed in a convenient location.
Use a tire gauge or an air hose on the Chek-A-Spare just as on a tire valve stem.
A must for hard-to-reach spare tires!
Use to check the pressure and to inflate when needed.
Once installed it is always ready to use.