Add a secure location for your Humminbird Helix 5 fish finder/chartplotter with this RAM Drill-Down Marine Electronic Mount. Flat surface drill-down mounting solution Marine-grade powder-coated aluminum Ball-and-socket for near-infinite adjustability Absorbs shock and vibration Medium double socket arm 2.5 inch diam. round base with C 1.5 inch rubber ball 1 inch x 2.5 inch rectangle base with C 1.5 inch rubber ball (4 hole pattern) Backed by lifetime manufacturer's warranty
