Article no. : 7350022735002 Multibrackets M VESA Desktopmount Triple Arm Expansion Kit - Mounting component ( three-screen mounting arm ) for 3 LCD displays - black - screen size: 15" - 24" This is M VESA Desktopmount Triple Stand Expansion Kit. A heavy duty triple monitor expansion kit desk stand combined with the M Vesa Desktopmount Triple Stand. Extending the M VESA Desktopmount Triple Stand (sold separately) to a 6 monitor installation. The table stand could also easily be exchanged to the M Desktopmount Desk Clamp (sold separately as art: 7350022735019 ) to create even better space on your desk https://multibrackets. com/5019. shtml . You could also make a throu-hole installation with the M Desktopmount Grommet Base (sold separately as art: 7350022737433 ) https://multibrackets. com/7433. shtml .