The RAP-B-166-AP9 consists of a 3.3" suction cup locking base, socket system and custom high strength composite cradle for the Apple iPhone 4. The mount is designed with a RAM 1" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles. Simply attach the suction cup base to the windshield of your vehicle for an easy and safe way to view your iPhone 4 in your vehicle. High quality materials ensure your iPhone 4 is safe, secure, and within easy reach. RAM’s patented design also dampens shock and vibration helping to extend the life of your iPhone 4.