U-Bolt with Double Socket Arm and Apple iPad & iPad 2 Non-Locking Mount The RAM-B-149Z-AP8U consists of a zinc coated u-bolt base, double socket arm and non-locking cradle for the Apple iPad & iPad 2. Designed into the mount is a 1" diameter patented rubber ball and socket system with adjustment points at the base and cradle. With a twist of the arm knob, you can move the iPad rail mount to your optimum viewing position. Included in this package is hardware that will accommodate rails from 0.50" to 1.25" in diameter. The RAM-B-149Z-AP8U is a great solution for mounting your iPad on a headrest. This mount is designed to hold the following devices: Apple iPad (1st Generation) Apple iPad 2 (2nd Generation) Material: High Strength Composite & Powder Coated Marine Grade Aluminum Ball Size: 1" Rubber Ball "B" Size Note: The "U" in the part number reflects product packaged in poly bag. The RAM-B-149Z-AP8U will NOT hold Apple iPad"s in cases/sleeves/bumpers. RAM recommends the RAM-B-149Z-TAB3U for iPad"s in cases/sleeves/bumpers.