Nauticam P714-Z Zoom Gear: Panasonic 7-14/4 (in 36164 Port)
Used for the Lumix 7-14 zoom lens
Required to operate the zoom ring on your 7-14mm Lumix Lens in Nauticam housing.
Check for compatibility with your rig.
(pretty specific I know, but maybe someone is looking for this and want to save $100)
Links to new products:
Looks like this on your lens: