DJS1181 Features: * Handlebar / rail mount * Material: High strength composite and powder coated marine grade aluminum * With locking arm and locking cradle for the apple iPad and iPad 2 * Consists of a zinc coated u-bolt base, locking double socket arm and locking cradle for the apple iPad & iPad 2 * With a twist of the arm knob, you can move the iPad rail mount to your optimum viewing position * Designed to hold the following devices: Apple iPad (1st generation), apple iPad 2 (2nd generation) * Ball size: 1"" Rubber ball "B" size * Locking cradle: Easy access to electronic ports, dial combination lock, mounting points with pre-drilled holes, including the universal AMPS hole pattern, locking knob that attaches to the double socket arm Includes: * Included in this package is hardware that will accommodate rails from 0.50"" to 1.25"" in diameter Dimensions: * Designed into the mount is a 1"" diameter patented rubber ball and socket system with adjustment points at the base and cradle