Features 1、[1 Inch Ball Adapter] The ball mount base is designed with a 1 inch ball adapter, compatible with B size 1 inch ball double socket arms for various mounting options. 2、[Enhanced Stability] The rubber made ball head offers excellent anti slip performance, ensuring a secure and stable attachment for electronic devices. 3、[Sturdy Construction] Crafted from sturdy marine grade aluminum alloy, CNC machined, and finished with III grade hard anodizing for reliability and durability in challenging environments. 4、[Convenient Installation] The 2 hole base features standard AMPS pre drilled holes for easy mounting, ensuring a quick setup for different applications. 5、[Wide Application] Ideal for use as a mounting base for boats, kayaks, semi trucks, cars, trucks, treadmills, etc., providing versatile and reliable support for electronic device. Item Type: Ball Mount Base Material: Aluminum Alloy, Rubber Ball Size: Approx. 25.4mm / 1in Package List 1 x Ball Mount Base