RAM MOUNTS heavy duty universal double socket arm mount with 1 round base with AMPS  & one 4.75" square base w/ VESA 75x75mm and 100x100mm holes. 2.25" ball.

RAM MOUNTS heavy duty universal double socket arm mount with 1 round base with AMPS & one 4.75" square base w/ VESA 75x75mm and 100x100mm holes. 2.25" ball.

RAM-D-101U-246$123.49