The RAM-B-107B is a marine grade aluminum base with 1" rubber ball. The base connects to the underside of Humminbird and Raymarine marine GPS devices listed below. This base is compatible with the following electronic devices: Humminbird 700 Series Humminbird 500 Series Humminbird 300 Series Humminbird 100 Series Humminbird Matrix Series (excluding Matrix 97) Lowrance Elite-5 Lowrance Elite-5M Lowrance Elite-5X Raymarine Apelco Fishfinder with matching hole pattern Ball Size: 1" Rubber "B" Ball Size Material: Powder Coated Marine Grade Aluminum Note: The RAM-B-107B is a "light use" base, designed to hold small marine electronic devices.
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1" ball & base for Humminbird & Apelco 97