From: $27.00
1.5 inch ‘C’ size RAM Ball as commonly used for deck mounting rod holders, fish finders and camera booms onto fishing kayaks
2.5″ x 2″ rectangle base. The base has four pre-drilled holes at each corner and are simple to install to a flat surface of the deck or gunwale of a kayak canoe or boat. 1.5″ Ball base, compatible with most RAM fishing rod holders and any RAM 1.5″ socket arm