A complete set of light knobs for a320 overhead panel specifically designed for SimGauges A320 OVP, but should work with any lever that has roughly 0.89mm diameter.
 

The head lights needs assembly, a small amount of glue is enough.

If you're having issues with the knobs rotating, i recommend using a small tack inside. be careful not to push too hard when inserting them. 
The final pictures were spray painted with gunmetal which I highly recommend.