RAM Drill-Down Double Ball Mount for Humminbird Helix 9, 10 & 12

The RAM Drill-Down Double Ball Mount for Humminbird allows for nearly infinite adjustability with a rubber ball and socket technology. The rectangular plate contains a 4-hole pattern of 1.5 x 4.5 inches while the round place contains two mounting holes at 180º and three mounting holes at 120º. Complete with a universal AMPS hole pattern, this RAM double ball mount will easily attach to the back of your Humminbird Helix 8, 9, and 10. Features: Double socket arm Universal AMPS hole pattern Two mounting holes at 180º and three at 120º Rubber ball and socket technology dampens shock and vibration Compatible: Humminbird Helix 8, 9 & 10 models.