1、ANTI THEFT: The round knob must be unscrewed by a star key, which serves as an anti theft function outdoors. Designed for superior functionality with anti theft feature to ensure security and peace of mind. 2、1.5 INCH: The 1.5inch double ball mount is a heavy duty, multi angle drill base mounting solution for tablets, cell phones, fishfinders, and more. Features a dual socket arm that can be conveniently adjusted to meet your specific viewing needs. 3、SUITABLE FOR: The fish finder double ball mount is designed to be mounted directly to a table, cart, desk, vehicle, boat or any flat surface. Engineered with 1.5 inch C size ball adapter compatible with various devices making it versatile and highly practical. 4、PREMIUM MATERIAL: Fish finder mount is made of marine grade aluminum for durability and reliability in the most demanding environments. Constructed for high durability and resilience to withstand the rigors of habitual use. 5、WIDE APPLICATION: Fish finder ball mount is commonly used in smart farm machines, inter machines, medical equipment, excavators, mining machines, tower cranes, etc. Item Type: Fish Finder Double Ball Mount Material: Aluminum Alloy, Nylon 1 x Double Ball Mount 1 x Accessories