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 kit from Yaesu. You will need the YSK-7800 for the FT-7800 or FT-7900, the YSK-8900 for the FT-8800 and the FT-8900, and the YSK-857 if you have the FT-857 for this set up to work. Please note these remote brackets are not included with this offer.
The LM-1203 microphone hanger is attached to the LM-EXT-01 extension plate.