Simply choose your preferred mounting location and the possibilities become endless with the Apple iPhone flat surface mount. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. High quality materials insure your Apple iPhone 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. This mount is designed to hold the following devices: Apple iPhone 4 Material: High Strength Composite & Powder Coated Marine Grade Aluminum Ball Size: 1" Rubber Ball "B" Size