1、Robust Material for Durability: Crafted from sturdy marine grade 6061 T6 aluminum alloy, with CNC machining and level III hard anodic oxidation surface finishing, this 1in ball mount base ensures reliability and durability in the most challenging environments. 2、Versatile Design: The mount base features a 1in anti slip rubber ball connected to a 4in diameter round base, complete with pre drilled holes with the industry standard AMPS hole pattern, making it widely compatible. 3、Compatible with Various Mounts: Compatible with for RAM brackets and for BRCOVAN B size 1in ball dual socket arms. Also suitable for any other equipment that adopts a 1in ball rotation mounting mode, making it highly versatile. 4、Ideal Support for Electronic Devices: Great to use as a mounting board to support various electronic device installations including mobile phones, tablets, cameras, fish finders, GPS plotters, and for Garmin, for Lowrance, for Humminbird, for Raymarine devices among others. 5、Suitable for Various Types of Vehicles: Perfect as a mounting base for various types of vehicles including boats, kayaks, semi trucks, cars, trucks, treadmills, and various off road vehicles, making it a handy addition to your ride. 1 x Mounting Base Item Type: Ball Head Mount BaseMaterial: Aluminum Alloy + Rubber