Short Pole Module w/ Circular Base & Cable holders for MDM1X series: MDM11S, MDM12D/Q, the diameter of the pole is 3.5cm (1.38″).
The perfect solution if you want to upgrade your desk monitor mount from MDM1X series.
The Pole Modules w/ Clamp & Cable holders are supplied in 3 lengths:
Short pole (44cm/ 17.3″), this is the default pole in MDM11S and MDM12D package
Long Pole (72cm/ 28.3″), this is the default pole in MDM12Q package
Extra long pole (100cm/ 39.4″), this is the pole you will need if you want to mount two rows of very large (26″ or larger) monitors on one pole or three rows of monitors.
These MDM10 spare parts are brand new, in OEM boxes, 2 years warranty.