This clamp is designed specifically for the md441 dynamic mic. It is a more robust and therefore more practical clamp than the transparent and rather fragile one that came with the mic.
It doesn't have a latch to ensure the mic doesn't fall out, but it grips tightly enough so that it really isn't necessary.
The thread for the mic stand, and the the thread adaptor insert supplied, are both plastic which is a bit crap considering the hefty price for a simple plastic mic clamp. Unfortunately the square profile of the md441 gives one little choice. Well worth replacing the insert with a metal one.
Overpriced but does the job, as long as care is taken not to cross thread the cheap plastic thread.