The powder coated marine grade aluminum base contains a 1.5" diameter rubber ball connected at right angles to a 1.25" x 2.5" inch diamond plate. The base has two holes 1.912" from center to center, positioned at both ends of the diamond base.
The RAM motorcycle handlebar base contains a 1.5" rubber ball designed to sit at right angles to the mounting rail. The metal u-bolt accommodates rails in diameter from 0.5" to 1.25" in diameter. The base also includes black cover caps to be placed over the exposed ends of the u-bolt.