Ram Mounts Ram Double Ball Mount - For Lowrance Elite-4 & Mark-4 Series. The RAM-B-101-LO11 consists of a 2.5in diameter round base with the universal AMPS hole pattern, double socket arm and adapter base that inserts directly to the back of Lowrance Elite-4, Mark-4 and Hook-4 Fishfinders. The adapter serves as a quick release mechanism, allowing you to remove or transfer your Fishfinder in seconds. Designed into the mount is a 1in diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm; this with RAM's rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles. Overall Height: 5in Socket To Socket Length - 3in Hole Pattern - 4-Hole AMPS: 1.181in x 1.496in, 3-Hole 120-Degree: 1.812in Diameter Plate Size - 2.5in Diameter Ball Size - B Size (1in) Weight Capacity - Standard Use: 2 lbs. Heavy-Duty Use: 1 lb Materials - Marine-grade aluminum Weight - 0.58 lb Additional Information - This product is not compatible with the standard Lowrance Elite-7.