The RAM-B-102-UN10U consists of a diamond base, double socket arm and universal spring loaded X-Grip® IV cradle for large phones and phablets. Designed into the mount is a B size 1" diameter patented rubber ball and socket system with adjustment points at the both ends of the socket arm; this with a twist of the arm knob, allows you can move the X-Grip® mount to your optimum viewing position. The 2.43" x 1.31" diamond base has two holes 1.912" from center to center and matches the industry standard AMPS hole pattern. The spring loaded X-Grip® cradle expands and contracts, allowing for a perfect custom fit of your phone or phablet. The X-Grip® includes a device tether recommended for outdoor applications. The cradle is compatible with handheld devices that will fit the dimensions listed below. It is important to verify the dimensions of your handheld device with a case/sleeve/skin when determining the overall size.