metal valve stem question?
 

i recently purchased a used set of work wheels, that come with work-specific metal valve stems. however, since the wheels are used, the valve stems have no valves in them, so they are open/hollow.

not knowing a lot about how it's done, will the tire shop just insert new valves into the stems, or do i have to buy complete new valve stems with the valves inside? :confused:

Tire valves are cheap....I used to replace them when I changed tires.