For the most part they were just what I needed. Fitment was tight, with the help of the agent on the phone we were able to get the size fairly close. I had to take approximately another mm or two from the inner ring to slide the tweeter cup inside. What would be helpful is if the adapters came with bends at the connection locations. However, I'm fully aware every tweeter is different, smaller or larger so each application may vary. All in all they worked.