That is about the lowest quality terminal you could get. Install something like this. That will take bare wire or banana plugs. I’ve never tried those plugs , got a whole dedicated thread to banana plugs . Deadbolt style probably my favorite. https://forums.audioholics.com/forums/threads/cheap-banana-plugs.126564/page-3#post-1589594 Why don’t vintage hifi shelf speakers have terminals only one pair of mine do. The rest micro thin cables .