RAM mount, Standard length double socket arm 4-5/8 inch socket-center to socket-center, 7-3/8 inch overall height, with 1-1/2 inch ball, and Universal Electronics mounting plate. This mount is designed to accommodate a variety of marine and mobile electronics through an array of mounting holes in the mounting plate. RAM universal ball and socket mount system. Marine grade aluminum with powder coat finish and rubber ball. Lifetime Warranty.