This zoom gear for the Panasonic Lumix 14-42mm f/3.5-5.6 II OIS lens is intended to be used with Nauticam (or Olympus) housings; Especially the NA-GX7 or NA-GX8. Nauticam gear for the Lumix 14-42 lens is for the now discontinued MK1 lens. If you buy GX8 camera or something similar today you will get the smaller MKII lens and the Nauticam gear will not work.
You can recognize the new lens from a red HD markings on the lens body.
Note: The MkII lens + gear has been tested to work well inside the Nauticam Macro Port 35. Other port options might also work.
This is a black version of the Deepshots Panasonic 14-42mm MKII OIS Zoom Gear