I have changed some lenses and have some nearly new pieces available:
Nauticam 60mm Extension
Nauticam - Aquatica Port Adapter (use Aquatica Ports on your Nauticam Housing)
Nauticam 41mm Macro Port
All above items are in excellent condition, a close look may find a few small marks but in near new condition (if you aren't happy when you receive them I will refund full price). Glass in macro Port is perfect.
2 x Nauticam Handle mounting Balls
2 x Nautcam M10 Mounting Balls with Lanyard Holes
These two show signs of use but are in great working condition.
Make reasonable offers.