Ram Mount Universal Glare Shield Clamp Mount for iPhone 4/4s without Case/Skin/Sleeve - Non-Retail Packaging - Black Consists of a glare shield clamp base, double socket arm and cradle for the Apple iPhone 3G/3GS The RAM glare shield clamp with double ball & socket system is far and away the most discrete and clean way to mount most any compact electronic device to the glare shield of your aircraft Mount will attach to flat surfaces with the following dimensions: Min: 4.4mm / 0.17", Max: 28.0mm / 1.12" This mount will NOT hold the 1st generation Apple iPhone or iPhone 4 High Strength Composite & Powder Coated Marine Grade Aluminum 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