Mainshaft for 500 Pantah. We have a few new ones which are prestine, as well as 1 GOOD but slightly discolored which is shown in the image - and I am calling it used only because it is not completely shiny looking with just a light surface rust which needs to be rubbed out.
So, buy a shiny new one, or buy the new one shown in the photo that isn't pristine and save some $$ - your choice.