The RAM-B-107U-C includes the RAM-B-202U round base, RAM-B-201U-C 6" metal arm and RAM-B-107BU platform.
This mount is compatible with the following electronic devices:
Humminbird 500 Series
Humminbird 300 Series
Humminbird 100 Series
Humminbird Matrix Series (excluding Matrix 97)
Raymarine Apelco Fishfinder with matching hole pattern
Lowrance Elite-5 Elite-5x Elite-5m Mark-5x Pro GPS Chartplotter