Attaches Canon EOS lens to a filter wheel.
Has correct spacing for use with ASI1600mm (or similar 6.5mm backfocus camera).
Surplus to my needs, having recently converted from Canon to Nikon DSLR and Lenses.
Full details:
https://www.bintel.com.au/product/zw...v=6cc98ba2045f
$40 plus postage.