1、Long Lasting: This fish finder mount is made of marine grade aluminum alloy construction provides rugged performance, superior strength and durability to withstand various harsh working conditions. 2、Premium Rubber Ball: An industrial grade rubber ball with a matte texture offers enhanced grip, providing a secure hold for your fish finder or chartplotter on uneven or bumpy boat surfaces, ensuring optimal positioning and stability. 3、Compatibility: The circular base includes a 2.25in D rubber ball and pre drilled holes, including universal AMPS hole pattern. The rectangular base also features a 2.25in D rubber ball with pre drilled holes designed to be compatible with various major marine electronics, including fish finders and chartplotters. 4、Universal Mounting: With pre drilled holes, this fish finder mount is perfect for a myriad of electronics. It is not only limited to fish finders or chartplotters but can also accommodate other gadgets, confirming its position as a universal marine accessory. 5、Easy Install: The fish finder mount is designed with a flat surface with various mounting holes, which is compatible with various models. Quick release and easy installation for your track system. Item Type: Fish Finder Mount Material: Aluminum Alloy, Nylon, Rubber Ball Head Diameter: 5.7cm / 2.25in Size: Approx. 21cm / 8.27in 1 x Fish Finder Mount