I have the 1100 shaft with extension. I used to carry it in my counter weight box, but now that is too heavy for this old guy.
So I keep the shafts in a length of white plastic pluming pipe. I added standard plastic screw on ends.
Inside there is rigid foam at the ends and a piece in between the two shafts.
It totally protects the shafts against all hazards, takes up little storage space, and aside from looking funny, works just fine.