Hit up a tool shop and get an M4.5x0.75 bottoming tap. That's the thread pitch Fatip uses (as do some other new and vintage European brands). Then you can make a handle out of anything you can drill a pilot hole in.
I picked up one of the Harbor Freight automatic centre punches made by Pittsburgh. They're cheap, they're brass, and you can open them up and take out the bits inside. Then run that tap down the hole in the end and you not only have a nice hefty long brass handle, but if you take out the centre section of it you will have a nice little travel handle as well. I will say the HF handle hole is almost too large to cut good threads at that pitch. It's fine, though if you're careful.
O.H.
I picked up one of the Harbor Freight automatic centre punches made by Pittsburgh. They're cheap, they're brass, and you can open them up and take out the bits inside. Then run that tap down the hole in the end and you not only have a nice hefty long brass handle, but if you take out the centre section of it you will have a nice little travel handle as well. I will say the HF handle hole is almost too large to cut good threads at that pitch. It's fine, though if you're careful.
O.H.