Complete flat surface, drill-down mounting solution for the Humminbird Helix 8, 9, 10, and 12
RAM Mounts ball and socket technology allow for near-infinite adjustability
Includes 3.68" round base with D size 2.25" rubber ball, short length D size double socket arm, and a 1.5" x 4.5" rectangle base with D size 2.25" rubber ball that connects to your Humminbird Helix marine electronic
Made of power-coated, marine-grade aluminum for durability and reliability in the most demanding marine environments