Adapts any DS100 for attachment through grommet hole in a worksurface.- Rock-solid base keeps monitors in place. Sturdy steel construction- Conserves desktop space by eliminating freestanding platform- Mounting Options: Attach through worksurface hole 3/8" to 3" (10 to 76 mm) wide and up to 3-1/4" (82 mm) thick. For maximum support, screw should be centered through hole- Note: For 33-325-200 (DS100 Quad-Monitor Desk Stand, Horizontal), two (2) bases are required- Includes extra cable-management ties and straps