RAM Mount X-Grip Phone Mount w/Handlebar U-Bolt Base [RAM-B-149Z-A-UN7U]X Grip Phone Mount with Handlebar U Bolt Base The RAM B 149Z UN7U consists of a zinc coated u bolt base, double socket arm and universal X Grip cradle. Included in this package is hardware that will accommodate rails from 0. 50" to 1. 25" in diameter. The base includes black cover caps to be placed over the exposed ends of the u bolt. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both