My 3D printer uses a range of about 5 different size (1.5 - 4mm) hex socket head fasteners several of which need to be removed and tightened when servicing/calibrating the printer.
The printer also came with a beaut tool kit including a really nice rubber handled 2.5mm ball headed driver, and 5 regular Allen keys to fit these screws.
The allen keys are fine for loosening and tightening but some screws are in very awkward positions for driving so I bought a set of alloy steel rubber handled ball headed hex drivers from Ali Express. Not T handled but straight like screw driver handles.
The brand name on the handle is RTools but the name on the shaft is Regal - Made in Taiwan (there are also some made in Japan). These are really nice and if they made regular screw drivers they would be worth considering but I have not been able to find any.