The RAM-246-2461U consists of a double socket arm, 3.625" square plate and 4.75" square plate.
The 3.625" square plate contains a 75mm X 75mm VESA hole pattern. The 4.75" square plate contains
a 4x100mm holes and 4x75mm hole pattern. Designed into the mount is a 1.5" diameter patented rubber ball and socket system with adjustment points at both socket ends of the arm.