Summary

I needed a plug , because it broke down. And a lot of these plugs are only available per 25 of 50, I only needed one. I made a small hole for the earthpin which also had to go through this plug. This plug fits in a 50mm tube (43.6mm) and can hold a 22mm tube within (and of course the earthpin).

I printed it red to remind me that this is an electricity feed.