This mount connects directly to then floor, or any mounting surface with the 2.5″ diameter base which is at 90, 45 or 0 degrees to the 6″ long vertical pole. At the top of the pole is a 1.5″ ball attached to the socket of a standard 4 5/8″ 1.5″ double socket arm. The LapTop tray (NOT included) connects to a 6.25″ x 2″ Plate with 1.5″ ball that joins to the double socket arm. Lap Top Tray (RAM-234-1) IS NOT included with the mount. Mounting hardware for the base is not included. The base unscrews from the pole, allowing the mount to be moved to other locations.