Ram Mount Combination Brake/Clutch Reservoir U-Bolt Mount for iPhone 3G/3Gs - Non-Retail Packaging - Black Consists of a 1" diameter rubber ball, hardware for mounting to both brake/clutch reservoirs and rails that are 0.5" to 1.25" in diameter High quality materials insure your device is safe, secure, and within easy reach High strength composite cradle Powder Coated Marine Grade Aluminum and High Strength Composite This mount will NOT hold the 1st generation Apple iPhone or Apple iPhone 4 Patented universal rubber ball and socket system allows you to mount virtually anything anywhere. Made of marine grade aluminum with a powder coated finish and rubber balls Superior shock and vibration isolation for electronics Unique design provides easy installation, mobility, strength, adjustability and versatility Construction provides a light weight and corrosion resistant product