RAM Quick Release Adapter with 1.5" Diameter Ball for "Rugged Use" Lowrance Elite-5 & Mark-5 Series Fishfinders Part #: RAM-202U-LO11 The 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 Portable Lowrance Mark-5x Pro Material: Powder Coated Marine Grade Aluminum Ball 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.