Black powder coated marine grade aluminum. The RAM-111 consists of a 2. 5 in. diameter round base that contains the universal AMPs hole pattern. Double socket arm and 6. 25 in. x 2 in. rectangle base. The rectangle base contains different combinations of pre-drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios, Gimbal Brackets and more. Quality marine product. Limited warranty.
