2 Inch x 5 Inch Aluminum Plate with 2.25 Inch Dia. Ball
Price: $33.49
3.68" Dia. Base with 2.25" Dia. Rubber Ball, SHORT Sized Length Arm and 2 Inch x 5 Inch Rectangular Plate for the Humminbird Helix: 9, 10, 12 and Solix 12, 15
Price: $119.99