Hello
I am after ANY type 2" barlow (or thereabouts) lens which I can try on a variety of different 2" eyepieces I have recently acquired. I am not after any particular brand and will consider anything you might have.
As one example I understand GSO make a good 2' barlow which does the job very well
https://www.bintel.com.au/product/bi...-2x-ed-2-inch/
However, if you have anything else please send me a PM
