Evening,

I just bought a house in AZ w/full body shower components. The knobs however are missing the plastic adapters that have teeth on both ends (internal teeth on the stem end and external teeth on the knob end). These plastic parts connect each of the knobs to the stems. There are 3 volume knobs and one temperature control knob. Does anyone have these parts laying around somewhere by chance?

Before we can help we need the brand name of the valve and its approximate age.
Back to you, Tom