The Audio-Technica AT8646AM is a rubber shock-mount plate with a 5/8" threaded fitting intended for use with gooseneck microphones. The plate is intended to absorb shock that can cause structure noise.
Audio-Technica AT8646AM Features
Intended for use with microphones mounted on lecterns, pulpits, conference tables and other surfaces
Suspended rubber panel isolates microphone from the mounting surface
Provides effective reduction of mechanical noise and vibration