Siig Single Articulating Montr Desk – Single Arm Replaceable Articulated Multi-Angle Monitor Desk StandElegant and Sturdy design allows you to adjust the height rotation and tilt to any position you need with the retractable arms – Ergonomic features include +/- 90 & +/- 360 arm swivels monitor tilt angles of +/- 90 +/- 90 swivel extends up to 15.70 from wall and 0.78 when retracted- Supports monitor from 14 to 30 and up to 17.6 lbs (8kg) of weight – Detachable VESA plate compatible with VESA mounting patterns 75 x 75 and 100 x 100 mm and supports VESA plate portrait or landscape monitor orientation- Safety knob ensure secure mounting the pole arm and adjustable height from 9.60 to 17.70 – Both desk clamp and gromment mount bases are included easily and quickly installs on to any desk/table- Heavy-duty C -clamp is compatible with desk surfaces from 0.39 to 1.38 in thickness and grommet in thickness 0.39 to 3.93 – Integrated cable management keeps cables neat organized and out of the way.