This base includes a 1" diameter rubber ball and inserts directly to the back of Lowrance Elite 4 and Mark-4 Fishfinders. The adapter serves as a quick release mechanism, allowing you to remove or transfer your Fishfinder in seconds.
Lowrance Elite-4 DSI
Lowrance Elite-4 Gold
Lowrance Elite-4x DSI
Powder Coated Marine Grade Aluminum
1" Rubber Ball "B" Size