Check the listing for details. RAM 1" Ball Flat Surface Mount for Raymarine Dragonfly Sonar / GPS. Condition: New. Listed at 38.49 USD. Features: ---Two round 2.5" bases, each with 1" rubber ball and pre-drilled universal AMPS hole pattern ---Standard length double socket arm - Overall Length: 3.69" - Socket-To-Socket Length: 3" ---A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection ---Includes mounting hardware to attach one base to bottom of all Raymarine Dragonfly Sonar / GPS devices* ---Mounts horizontally or vertically ---RAM ball and socket system for easy adjustment to your perfect viewing angles ---Constructed of powder coated marine grade aluminum ---Genuine RAM Mount: Part # RAM-B-101-RYM1 ---Manufacturer's lifetime warranty ---Made in the USA * Includes only harware for mounting the device and not for attaching the mount to a flat surface.