Comet RS-720NMO Medium Duty Universal Mobile Antenna Lip Mounting Bracket. (No Coax Included). It has a 3/4 inch hole to accept an NMO Mount. Now with 3 Year Warranty. Soft rubber gasket protects the vehicle paint. Four large set screws hold the mount in place, holding from the under-side. Adjusts in four adjustment planes, attach to any lip on the vehicle and it will adjust to vertical. Dial-lock to lay the antenna down and lock it in place. This will accept the matching cable assemblies from Comet, or of course you can use your own. Supplied with 2 Allen Keys for secure fixing. Holds antennas up to 60 inches /1 lb. Footprint: 2.1 inches x 1.15 inches Note: Designed to be used with an NMO connector, sold separately.