Rail Base with U-Bolt & 1in. Ball
The RAM-B-231 consists of a 1in. rubber ball designed to sit at right angles to the mounting rail. The rust proof metal u-bolt accommodates rails in diameter from 0.5in. to 1in. in diameter. Included are black cover caps to be placed over the exposed ends of the u-bolt and a composite adapter that can narrow the rail to a minimum width of 0.5in.