RAM® Double Ball Mount with Two Marine Electronic Plates Vision 12" an 18 inch NPT metal

an 18 inch NPT metal pipe with a 6 inch double socket arm attached to it and finally a 2

5" diameter base with the universal AMPS hole pattern and round base with a 1/4"-20 threaded steel stud

5" diameter rubber ball

5 inches between screw holes

The ball base is made from a lightweight marine grade aluminum with powder coat

RAM® Double Ball Mount with Two Marine Electronic Plates Vision 12" an 18 inch NPT metalThe RAM 133A mount consists of the 1. 5 inch diameter ball and socket system with universal 6. 25 x 2 inch rectangular base ends. The bases have many different combinations of pre drilled holes which will match up to many electronic devices and mounts, including Marine GPS, CB Radios, Ham Radios and Gimbal Brackets.