Article no. : 7350022737426 Multibrackets M VESA Desktopmount Dual Stand Expansion Kit - Mounting component ( dual arm, pipe ) for 2 LCD displays - black - screen size: 24" - 32" This is M VESA Desktopmount Dual Stand Expansion Kit. A heavy duty dual monitor expansion kit desk stand that is combined with the M VESA Desktopmount Dual Stand. This extends the M VESA Desktopmount Dual Stand (sold separately) to a 4 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 . You could also make a throu-hole installation with the M Desktopmount Grommet Base (sold separately as art: 7350022737433 ) https://multibrackets. com/7433 .