Spent all of last weekend replicating the connector thingees. For fun, I also replicated the connector seen in the Egon GB2 costume from Planet Hollywood. These were cast today with a flexible rubber-like poly-urethane. They come already dyed in gray:
It be better looking if you put a short dowel on the inside, short enough that you can’t see it, just enough that the end of the hose can slide over and stay secure! Other than that it looks good!
The stem, because it is rubbery and flexible, can be cut at any size you want, but I wouldn’t do that. I’d rather stay accurate and have a good hold on the hose, instead.