RAM U Bolt Rail Mount with a 44mm short arm and a RAM-HOL-AP9 Apple iPhone 4 Cradle.
The u-bolt base for attaching to struts, tubing, or rails. Simple to install and easy to use, the possibilities become endless. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your device is safe, secure, and within easy reach. RAM’s patented design also dampens shock and vibration helping to extend the life of your mobile device.
Ideal for viewing those Golf Apps.
The RAM handlebar or rail mounts consists of the zinc coated u-bolt, accommodating rails from 1/2" to 1 1/4".(1.3cm - 3.2cm) in diameter. Includes 1 x 26mm & 1 x 32mm u-bolts & adaptor shim.

The video below is an example of the RAM rail mount and may not show your vehicle or device.