Water Hose End for LEGO TECHNIC (Water tight, used on model fire truck)

An older design of mine, this is to go on the end of a small pipe to direct water.

I used it on my LEGO TECHNIC Fire Truck model, which used a small (Non Lego) pump to pump real water.

Video: https://youtu.be/k29jUfUAZis
Main video: https://youtu.be/PH5SjyulIHA

I can't remember which version I used in the end, but I've uploaded some images showing the differences. i.e the shape of the connector and the diameter.

I've also uploaded an image illustrating the orientation that it w