The pole module is an essential part of the MMS04 MMS05 LED/LCD monitor arm table stand.
The pole modules come in two different lenght. Short 40 cm and Long 70cm. The short pole is default module in the standard package of MMS04 (Single Monitor Stand), MMS05 (Dual Monitor Stands). You can buy this long pole module so you can lift our monitor higher, or you want to mount a 2nd monitor or a laptop tray on/below the existing monitor.
Please note these MMS0PL long pole modules are NOT suitable for MDM1X series LCD moitor mounts (MDM11S, MDM12D, MDM12Q) nor the MDM0X series LCD monitor mounts (MDM05 MDM06 MDM07).