This is the 22" Version of the LM-300 This mount is very easy to install. Just loosen the passenger seat bolt, slide the mount bracket under the bolt, tighten the bolt. The mount has a 22" Gooseneck Swivel Mounting Pedestal, this allows you to place our device in the perfect position for optimal viewing. This mounting solution does not require drilling. We do include additional hardware if you do want to permanently install the bracket, but it is not necessary. The threaded stud mount on the face of this mount will screw into the Icom MB-63 mobile mounting bracket for the IC-706, It will screw into the MB-105 plate If you have an IC-7000, and if you have an IC-2820 it will screw into the metal mounting plate that came with your IC-2820. Please note the MB-63, MB-105 or IC-2820H metal mounting plate does not come with this mount. If you do not have this you can get them from your Icom Dealer or from Icom direct. We also have a side grip holder that will work if you do not wish to purchase the MB-63, MB-105, but this really is the best mounting solution for your control head.