RAM Mounts Handlebar U-Bolt Base for Rails 0.5" to 1.25" in Diameter RAM-B-231ZU with B Size 1" Ball

The RAM-B-231ZU consists of a B size 1 rubber ball designed to sit at right angles to the mounting rail.The zinc coated metal u-bolt accommodates rails in diameter from 0.5 to 1.25 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 0.5.'