I rather suspect Niro
Peterson exist in the world where people don't add bits of plastic to their
boats Drew. Similarly they're probably not the sort of
boat owners to ever look at Amazon or Alibaba. I expect they have underlings selecting/organising the appropriate
gear and arranging its acquisition/install by appropriately trained technicians etc for their yachts.
I'd guess too that the firm is likely to regard super yacht builders as their main market too.
But send them an
email directly. My experience has been German and Austrian firms are helpful and responsive. And they're quite comfortable selling direct.