Felt circle/washer?

[Double Daddy]

I just bought a set of Corelli 380s. Where does the little white felt circle/washer go?

[Francois Blais]

Leave them against the string balls.
When you install the strings, they'll be between the ball and tailpiece, protecting it against the string pull. (metal on wood)
May prevent buzzes there too!

[hdiddy]

I like to hang on to the felt washers. I forget if my Kolstein heritages came with washers, but if it didn't, I would've definitely taken the ones from my correlli's and put them on the kolstein strings just as protection.