If you're upgrading from an existing antenna system and need an NMO mount, or if you want to put together a setup and need the NMO mount with coax. This cable will work. Most NMO cables require a 3/4" hole or larger, this cable and mount only needs a 1/2" hole. Why does this matter? If you already have a fender mount for a CB antenna and decide you want to use a HAM radio antenna instead, this mount will take the place of your CB coax and stud without you changing the mount.