Geoffs Dubro Ball Allen Key Sleeve/Handle adapter

I'm happy using my Allen Key to Hex Driver handle adapters, but frustrated that my genuine DuBro Hex Ball End Allen Keys gave the best hardened ball ends, but the 1.5mm & 2mm handles are too damn small to tighten the m3 screws on my 3D printer sufficiently - and they will come loose if not really tight.

Then, a brainwave - why not make a hole in my existing 3D printed allen key Hex Driver handle adapters and slide in a DuBro Allen Key - and it even worked :-)

The 3 pictures show how to dus