Flat Surface Mount w/1″ Ball, including M6 X 30 SS HEX Head Bolt, f/Raymarine Dragonfly-4/5 & WiFish DevicesThe RAM-B-202-379-M616U consists of a 2.5″ diameter round base with the universal AMPS hole pattern, STANDARD size double socket arm and 1″ diameter ball, containing a M6 x 30 SS HEX head bolt. The mount is designed with a RAM 1″ diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; this allowing for almost infinite adjustment and perfect viewing angles.The RAM-B-202-379-M616 reduces the mounting footprint, compared to old dragonfly units that contain a large neck. This mount allows for a seamless marriage of RAM components into your Raymarine system, opening up the ball and socket system and all of our mounting options to you.Material:High Strength Composite & Powder Coated Marine Grade AluminumBall Size:1″ Rubber Ball “B” SizeNote:The “U” in the part number reflects product packaged in poly bag. Raymarine device not included with purchase.