Ahh plumbing fittings size . I'll keep my eyes open as I trawl for my jet drives .

When I say small I mean outlet size of 10mm I think. May have to make it look like jet drive but actually run standard props

The NQD tear into jet boats drives are fairly small and inexpensive if that helps . Im the other end of the scale need bigger but don't want yo pay through the nose for them lol

Funny but I looking at jet drives at the moment. Buy I want really small ones so think I going to have make my own or at least attempt it.

No these are good water jets but to small to push the Nam boat Neil . KMB manufacture ones that would do the job but I wondered if anyone has had dealings elsewhere as KMBs are £££ . Perhaps some one has made their own ? 😊

As discussed Craig, have a look at Ebay item 331364178908.
May be useless but you never know! is this for your Vietnamese River Boat?