This multi-monitor configuration includes the VPM-100, basic pole mount, which provides 12° of pivot and is VESA 100×100mm compatible. Three VPM-100 mounts are included with a 42" single pole with horseshoe grommet base for multi-monitor mounts. The grommet base fits any 2 1/8" cable routing hole, standard in a standard office desks, cubicles or industrial consoles. - Set screws allow the mount to be positioned anywhere along a pole - Key hole mounting slots for faster installations - Through counter base allows cable and power to be routed through a solid surface - 12° of omni-directional movement and 360° rotation - Includes MM-HP42