Flexible drivers are also very handy with miniature equipment. This set...
https://www.amazon.com/Sourcingbay-S...engfa+tool+kit
which I own, contains one as well as the hard-to-find miniature hex sockets in sizes M2.5,M3.0,M3.5,M4.0,M4.5,M5.0,M5.5, There's even triangular screwdriver bits (haven't found a use for them yet) and some bits that look a bit like hex bits but have only t five sides (probably some alien spacecraft standard). Miniature pozidrive bits are hard to find and, if memory serves, it has those too. Regardless, highly recommended if you are forced to deal with the small side of the universe.