Our new LM-803 Cup holder mount can be adjusted from 6 1/2" to 8" from the top of the adjustable base. the base can be expanded from 2 1/4" to 3 3/4" in diameter by turning the expansion knob. This package includes a 5mm stud that can be threaded direclty into the control head. Nothing else to buy. Please note the transceiver in this photo is not included in this offer. Check out our video to see how it works.