Attenuates noise, shock and vibration transmitted through mic stands, booms and mounts. Compatible with 3/8"-16 and 5/8"-27 threaded stands. Designed to be used with the following Audio-Technica models: AT2020, AT2020USB (discontinued), AT2020USB+, AT2035, AT2040, AT2040USB, AT2050, AT3035 (discontinued), AT3060 (discontinued).