Audio-Technica AT8456a Quiet-Flex Microphone Stand ClampQuiet Flex microphone stand clamp AT8456A mounts handheld mic in place and isolates the mic from noise in the mic stand. Clamp screws on to 5 8 27 mic stands to stay tightly in place. Material of the clamp limits stand noise from being picked up by the mic. This stand clamp is specifically designed for Audio Technicas handheld wireless microphones. These microphones are thicker than common wired mics, so the stand clamp is only recommended for use