This is designed specifically for the Samson C01 condenser mic. and comes complete with the threaded nut that hold it to the mic. It works great and looks cool too and I am going to buy another one.
Works like a champ. No noise when people walk across the stage. Fit my Sampson microphones.
They are shipped in cardboard, so I purchased a work box from Harbor Freight and Tools to put them in.
I have been overly impressed with all Samson products I have tested. For the money I honestly wasn't expecting much but, the SP01 shock mount is built solid and works as intended.