All I can say is, I'm so happy I bought extra one of these as I purchased the MXL 990. After a couple of years, the original shockmount started loosening around the screw and could no longer support the weight of the mic, I was delighted to remember I had one extra in storage.
It never hurts to prepare, guys. If you're buying the MXL 990, grab one more of these, so you'll be prepared when the original draws it's last breath. You'll be glad you did!