C Size 1.5 Inch Aluminum Fish Finder Mount Plate Fits Helix | Fits Humminbird Helix 5 and 7. Includes mounting hardware. Compatible with RAM Mounts 38mm C size arms

Enhanced Compatibility - 1.5-inch ball universal mounting plate for fish finder, GPS chartplotters, and more. Precisely fits 1.5-inch / C-size / 38 mm arm systems, compatible with RAM Mounts, Arkon, iBolt, and others. Compatible with Humminbird Helix 7, Helix 5, HELIX 5 DI, HELIX 5 DI GPS, HELIX 5 SI GPS, HELIX 5 SI GPS KVD, HELIX 5 SONAR GPS, HELIX 5 SONAR, HELIX 5 XD GPS (NOT compatible with: the Humminbird Helix 8, 9, 10, 12, 15, the Solix 10, 12, 15). Built for Marine Use - Made from Marine-Grade Powder-Coated Aluminum and tested for thousands of hours in salt spray to ensure reliability and stability in the harshest conditions. 1.5" Ball Constructed from Marine-Specific, High-Strength Composite Material, which offers greater resistance to high salt water corrosion and is less likely to deform than rubber. Delivers the same friction as rubber. Improved Durability - The ball and mounting plate are Molded as a Single Piece, rather than screwed together, for improved durability and to ensure the stability of the device. Cast as a single piece of aluminum for strength and durability under the impact of waves