RAM MOUNTS - RAM MARINE ELECTRONIC MOUNTS FOR EAGLE - HUMMINBIRD & LOWRANCE - RAM107. The RAM-107U consists of a double socket arm, 2.5" diameter round base with the universal AMPS hole pattern and connecting Humminbird/Apelco marine adapter base. The mount is designed with a RAM 1.5" diameter patented rubber ball and socket system that has adjustment points at both ends of the double socket arm; thus allowing for almost infinite adjustment and perfect viewing angles. Rubber ball and socket technology allows for almost infinite adjustment and perfect viewing angles.. Features:. Product Dimensions - Overall Height: 7.35". Socket-to-Socket Length - 4.66". Hole Pattern:. 4-Hole AMPS: 1.181" x 1.496". 3-Hole 120-Degree: 1.812" Diameter. See Drawing. Plate Size:. Top Plate: 4.25" x 3.81". Round Plate: 2.5" Diameter. Ball/Socket Size - C Size (1.5"). Weight Capacity:. Standard Use: 4 lbs. Heavy-Duty Use: 3 lbs. Materials - Marine-grade aluminum. Packaging Type - Poly Bag. Weight - 1.3 lbs.