Bergeon 5430 Watch Hairspring Collet Remover
This set of two genuine Bergeon collet levers was designed specifically for removing hairspring collets. But, like any truly great tool, this set has several other uses too.
You can use it to rotate the collet on the balance staff and many certified watchmakers prefer it for the removal of hands on high grade fine watches since the ends are very fine.
The number of uses of this tool set is only limited by your imagination.