It's MRS60 II wo control ring for use in Nauticam Housing systems. The port has minor exterior wear with no scratches on glass. Can be used for Canon EF-S 60mm USM or with with the Insect Eye lens.
I will send the inner magnet ring that fits onto the 60mm Macro lens, but I need to keep the outer control ring for my 100mm macro port.
You will also need an Inon port adapter to use this port with nauticam systems.
The port has a diameter of 95mm at the threads and here's the link to the page with the specs: http://www.inon.jp/p...nport/port.html
Asking 100$US plus shipping
