RAM MOUNTS KIT LG XGRIP UBOLT RAMB149Z-UN10UConsists of a zinc coated U bolt base, double socket arm and universal spring loaded X Grip IV cradle for large phones and phablets, Package includes hardware that will accommodate rails from 0. 50" to 1. 25" in diameter, Base comes with black cover caps to place over exposed ends of the U bolt, Included composite rail adapter narrows the rail to a minimum width of 0. 5", Mount is designed with a RAM B sized 1" diameter patented rubber ball and socket