This is a Round Base (same pattern and size as D style 2.25" Ram) with a 6" arm. This will work with Humminbird units and will support up to a 15" Unit.
Tired of constantly adjusting your mount after hitting a rogue wave??? Here is the solution. Balzout is rugged aircraft grade aluminum that locks and place and will NOT move.
Mounts can be ordered with a 4", 6", 9" or 12" arm. They can be configured with a "RAM" style round base or a rectangle base. Call today for customer colors or sizes. 603-264-9739