As I say someone will get some in soon I have no doubt, he was a bit sparse with his info and didn't follow up to well I thought.
Oh well it's his sales that will suffer not mine.
I wouldn't need bushes or mandrel to turn one of these, I am quite capable of making my own should I decide they are something I would repeat often.
For a one off I would turn between centres and use callipers.
I am interested to see them and happy to try a new kit, it does look like it may be an improvement but in no hurry to do so and certainly not prepared to make a big investment in them.