The base of this mount expands out to 3 3/4 inches in diameter by turning the adjusting knob. The neck of the mount is flexible so you can adjust the mount for the perfect view of your device.
This package comes with LM-EXT-01 extension plate. You can attach the remote head bracket that came with your TYT Transceiver. The LM-1203 microphone hanger is attached to the LM-EXT-01 extension plate.