1、High Security: The 1.5in double ball mount is equipped with a circular knob that can only be rotated with a special key, providing an anti theft function. Whether you're using it outdoors or indoors, you can rest assured your devices are secured. 2、Versatile Heavy Duty Mount: This 1.5in ball mount serves as a heavy duty, multi angle solution for mounting devices such as tablets, smartphones, and fish finders. It is designed to mount directly on flat surfaces such as tables, hand carts, desks, vehicles, and boats. 3、Safe and Reliable: Crafted from marine grade aluminum, this fish finder mount offers maximum durability and reliability, even within the most challenging environments, ensuring it lasts for a great stretch of time. 4、Broad Applications: This mount is a preferred choice for mounting devices in various machinery such as smart agricultural devices, inter machines, excavators, mining machines, and tower cranes. 5、Easy Installation: With its user friendly design, the double socket arm ball mount is straightforward to install on any flat surface, thus offering flexibility and convenience to the user. Item Type: Double Socket Arm Ball Mount Material: Aluminium alloy + Nylon 1 x 1.5Inch Dual Ball Mount 1 x Accessory