Simply choose your preferred mounting location and the possibilities become endless with the universal cell phone flat surface mount. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. The cradle is designed to hold a large amount of different kinds of cell phones and small electronic devices. This cradle has padded locking side clamps that close tightly on the item you want to hold. To release the clamp hold, simply press the button found at the bottom left side of the cradle which will spring the clamps open. At the base of the cradle are two small supports to hold the bottom of the item securely in the cradle. High quality materials insure your cell phone 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. Cradle Dimensions: Minimum Width: 1.5″ Maximum Width: 2.5″ Side Clamp Height: 1.56″ Side Clamp Depth: 1.13″ Cradle Height: 3.62″ 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. RAM® double socket arms with their distinctive hour-glass shape are designed and recognized to provide the best possible performance for most any application.