Used Nauticam N100 to N120 Extension ring for Sony A7S ONLY

$ 860.00 Regular Price custom build     We have one in stock  Barely Used Nauticam N100 to N120 Extension Ring for the A7S underwater housing only    Do you have a sony A7s original full frame 1080 HD Camera.  This adapter is to mount the extension ring conversion from 100 mm to 120 mm port extension