Here it is, the driver used to assemble all of the products at the Fellhoelter shop.

They all use the short driver bits, and are generally larger in diameter.
(Mine are 3/8″ in diameter or about 9.5mm)

The bits are held in place by a magnet, so they are very easy to change from one size to the next.
If you are lazy like me though, you’ll just want several drivers, in different materials, for each size.
Then, you can tell at a glance what is what, and never slow down…

Specifications: