RAM Quick Release Adapter with 1.5" Diameter Ball for "Rugged Use" Lowrance Elite-5 & Mark-5 Series FishfindersThe RAM adapter base includes a 1.5" diameter rubber ball and inserts directly to the back of Lowrance Elite 5 and Mark-5 Fishfinders. The adapter serves as a quick release mechanism, allowing you to remove or transfer your Fishfinder in seconds. Compatible Devices: Lowrance Elite-5 Lowrance Elite-5 DSI Lowrance Elite-5 Gold Lowrance Elite-5x Lowrance Elite-5x DSI Lowrance Elite-5m Lowrance Elite-5m Gold Lowrance Mark-5x Lowrance Mark-5x DSI Lowrance Mark-5x DSI PortableLowrance Mark-5x ProMaterial:Powder Coated Marine Grade AluminumBall Size:1.5" Rubber Ball Size Note:The "U" in the part number reflects product packaged in poly bag. RAM recommends this adapter base for "Rugged Use" mounting applications, including heavy weight Lowrance Elite and Mark Fishfinders.RAM Double Socket Arm for 1.5" Ball BasesThe RAM-201U, standard double socket arm, has a socket at both ends that accommodates 1.5" ball bases. A single spring inside the arm opens the end sockets, allowing you to pivot the ball and socket connection. This socket technology allows for almost infinite adjustment and perfect viewing angles. Dimensions: Overall Length: 5.625"Socket-To-Socket Length: 4.5"Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5" Rubber Ball SizeRAM 2.5" Round Base w/ AMPs Hole Pattern & 1.5" BallThe RAM-202U consists of a 1.5" diameter rubber ball connected to a flat 2.5" diameter base. This mount has pre-drilled holes, including the universal AMPS hole pattern. Material: Powder Coated Marine Grade Aluminum Ball Size: 1.5" Rubber Ball Size