Wago nuts

These are probably the highest rated product I've ever seen on Amazon, and not as expensive as you might think, especially considering their versatility & ease of use(and re-use).

The connectors themselves are getting easier to find at attractive prices in the US.  But to neatly mount them to a surface (if that's what you want to do), the so-called mounting carriers and strain-relief plates are a little harder to find and relatively expensive.  These are parts numbers 222-500 and 222-505 for the 222 series you show.

Excellent product.  Thanks for posting.

Wow, I have not seen these types of connectors before - they do look pretty nice in the videos, and as Rob said they get amazingly good reviews.  Since I am right at the point of wiring a new layout in our next house at this time, I think I will give these a try. Thanks a lot for sharing this.

They look good to me too.  Especially for tapping off a buss.  Cut the buss wire and push the three wires in.  No upside down soldering.

You can hot glue them to a structure wall and consolidate several wires in one port.  They can also be hot glued to the floor of passenger cars to simplify lighting wiring.

Bruce

They are nice and work just fine. I got some to experiment with a while back. I had not seen the mounting carriers stan2004 posted, those look nice too. Also hot gluing them is a good idea as well as BruceT47 suggested, hadn't thought of that one.

I find you need 2 hands to open the lever - one hand to hold the gray housing and the other to lift the selected lever.  Comparing to other "bus" connection systems, many have screw mounting holes to firmly and neatly attach them to a surface.  The bottoms/sides of the 222 series Wago connectors do not make for a simple mechanical attachment (without their somewhat awkward in my opinion mounting carriers).  Yes, you can glue the housings to a surface but unless using a really strong glue you still need 2 hands to open a lever or the connector will rip off the surface.  Note that to release a wire you're pulling away from the surface; in other connection systems you push down on a spring-loaded lever to release.  Kind of hard to explain.

For many applications having 2 hands available is no big deal; I'm just sharing my experience for cramped situations such as working underneath a layout.

But don't get me wrong. These connectors are a definite contribution to the hobby!

I just ordered some from Amazon. The shipping date is nov. 27 to dec 15. I sure hope that it don't take that long. Tstark

I have been using them for a couple of years now and they work great.

There was a guy selling these on the bay. I bought some to wire my hobby building. Best thing i ever bought and far better than wire nuts. Shipped very quickly. Sorry i don't remember his name.

Personally I would not buy the mounting plates.  I would use these with a zip tie to secure it.