Driver size in Europe for pickup solution

[lukevintage]

I had no luck getting a driver from my local stores as the sizes are 6 or 7 mm, not 1/4 inch. Instead I found a drill point that fit and took that to the shop to find a similar driver. The assistant pointed out that it wasn't a driver tip but rather the holder for different screw tips. She sold me a handle that I could use instead of my electric drill.
Once I got home I looked at the female hexagon on the handle and tried it on the pickup screw directly without the drill tip. It fits exactly!
So if you need a driver for your pickups in Europe, use a tip holder (forgive me for not knowing the technical names of these tools; I am a guitarist after all).