The A55M Shock Stopper from Shure is a high-quality isolation mount and swivel adapter. The mount has standard threads for use with a variety of mic stands and boom arms. The full-circle design provides a secure hold, and the built-in elastics provide isolation from unwanted vibrations. The mount is compatible with virtually any tapered microphone, including the SM57, SM58, SM86, Beta 57A, Beta 58A, Beta 87C, and KSM109.
Works well but not the most convenient to get the mic in and out of the mount
The Shure A55M does a pretty good job at reducing vibrations and resonances coming from something like a boom arm like the Rode PSA1. It's not perfect, and don't expect it to completely mute all vibrations/sounds coming from a stand or boom arm, but it definitely reduces them by a decent amount. Enough to make handling a boom arm around a non-issue during streaming. I also think it looks pretty nice on the Shure SM57 along with the A2WS-BLK windscreen on it. It gives it a complete look.