ShopHome / Fishfinders / RAM Transducer Arm Mount with Open Single Socket. Compatible with all RAM 1 inch Ball Bases and… “Ram Universal Electronics 6 1/4 inch X 2 inch Base with Enlarged Holes and 1 1/2 inch Ball” has been added to your cart. View cart RAM Transducer Arm Mount with Open Single Socket. Compatible with all RAM 1 inch Ball Bases and…$53.49 Out of stock SKU: B316-18-TRA1-NB Categories: Fishfinders, POD III Parts Description Additional information * Weight 1.5 lbs