Heavy Duty - The weight capacity of the marine electronic mount can be up to 15.5 lbs at rest and 4.5 lbs at motion. The 1.5 inches double ball mount is a heavy duty multi-angle drill base pedestal mounting solution for tablets, cell phones, fish finder and more. It is designed to install directly on a table, cart, desk, in a vehicle, boat, or on any flat surface (complimentary 4 sets of 316 marine grade stainless steel machine screws, lock nuts and sheet metal screws). Sturdy and Durable - Constructed of Powder-Coated Marine-Grade Aluminum and Stainless Steel Hardware. The mount has been Salt Spray Tested for thousands of hours (including stainless steel bolts and springs) to resist high salt water corrosion. Cast in one piece of aluminum rather than screwed together, it remains strong and durable even in the harshest environments. Universal Design - Includes two round ball bases and C size 5.5" length double socket arm; The ball and socket technology allows for near-infinite adjustability. Perfectly fits 1.5 inches / C size / 38 mm adapters and arms, compatible with RAM Mounts, Arkon, iBolt and others. Industrial Grade Manufacturing Standard - Industrial-grade manufacturing standards ensure firm connections and protect your device. Drill-down mounting solution, choose either round plate featuring the AMPS hole pattern for attachment to compatible device holders. Compatible with Garmin: Striker 4, Striker 4dv, Striker Plus 4cv, Striker Vivid 4cv, echo 100, echo 150, echo 300c, ECHOMAP Plus 42cv, ECHOMAP Plus 43cv, ECHOMAP Plus 44cv, ECHOMAP Plus 45cv, ECHOMAP UHD2 6". Industrial Grade Manufacturing Standard: The Mount consists of a 5.5" Length C size double socket arm and two 2.36"(6cm) diameter round plates that contain the universal AMPS hole pattern. Protecting the Device: Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments. The design discourages shock and vibration, helping to extend your device’ life. The dual socket arm with a unique shape is perfectly designed to provide the best performance for most applications. Perfect Viewing Angles: Rotates 360 degrees for optimal viewing positions. The 2 adjustable points offer freedom to completely adjust the arm to the optimal viewing position.