I was glad to find this item, because the original mounting ring that came with my Rode NT2-A had a bad thread and would not attach properly to the microphone. I should have returned it at the time of purchase, but didn't. It only held the mic loosely in place, and I was concerned that the thread on the mic might become damaged over time.
Anyway, this replacement mounting ring is much better than the original: it screws on smoothly and allows me to attach the mic securely to the cradle.