RAM-HAR-SU251Z

Zinc Coated U-Bolt Hardware Pack, accommodates Rails 0.5"(13mm) to 1.25"(32mm)
The 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".