A definitely overengineered, but rather easy to print allen key handle.
Keep in mind, that being a bit careful tightening the screws is always a good thing and it's definitely easier to apply too much force with an additional leverage provided by this handle.
Available top sizes: 1.5, 2.0, 2.5, 3.5 and 4.0 mm.
The author marked this model as their own original creation.