What is the thingie on the WBT Bananna Plug

Yes, I am referring to the angled plugs. See the situation is that my speakers have 4 flush holes in the center of the rear of the speaker for biwiring with bannanas, they do NOT have binding posts. So if that plastic dealie is designed to hit or engage the outer periphery of a binding post to prevent rotation of the plug, it will likely prevent the bananna from being inserted into my speakers, right? At least this is how it looks from the picture. Do you get what I am saying?

I think I understand your predicament. In my case the binding posts/knobs add distance so that the plastic plug never bottoms out against the cabinet. Are you saying because you only have flush holes, that the plastic plugs may prevent you from inserting the banana securely into the hole? If I'm correct, I don't think the angled WBTs will work for you. I just took a look at my WBTs, and it seems that the plastic plug does not protrude as much as the banana plug. But, there is only about at most a 1/16" difference, which may not work in your application.

Have you looked into the other WBT bananas? They don't use the plastic extender plug that the angled ones do. The Analysis Plus Oval Nines I used to own had the Midlines with plastic twist sleeves. The WBT Topline bananas I believe uses a metal twist sleeve. Although the angled WBT sleeves are plastic, I feel they are much easier at locking then the Midlines. I have no experience with the Toplines though.

Let me know if I've accurately described your situation.

The "insulator" is to prevent inadvertent installation of the banana plug into a type of 240 volt wall outlet common in Europe. Sort of an attempt to appease some "big brother" government regulation.

Alexander is correct. It has to do with laws particulerly in Germany to prevent them from being plugged into an AC outlet. Another protection device for children and real stupid people. Mine would not insert fully on my Legacy speakers. So I cut the plastic rod off and dressed it with a file. It is a perfect fit now. As far as resale goes I plan on keeping them. Sound wise the 0600 straight rodium top line bannas sound better.

Hi, I forgot to mention that Parts Express sells WBT connectors at the best prices I have seen. Go to their web site at WWW.partsexpress.com . Good luck!