Audio-Technica Gooseneck Uniline Series Cardioid Micropone Microphone Mount (AT8484) Attenuates noise, shock and vibration transmitted through mic stands, booms and mounts. Inner shock mount ring rotates to engage ball bearings that lock microphone in place. Compatible with 5/8"-27 threaded stands. Designed to be used with the BP40. Fits Audio-Technica Case Style(s): R12