Invision PC Monitor Arm MX150  Ergonomic Height Assisted (Gas Powered) Full Motion Single Arm Desktop Clamp Mount for 17–27” Screens Adjustable Tilt Swivel VESA 75mm & 100mm
Screen Weight 2kg to 6.5kg
Can be either clamped to a desk or through the desk.
Min desk thickness 1mm, Max 128mm

Condition is as new- We have moved to a wall mounted multi screen arrangement so no longer needed. Cost new £40- grab a bargain

Elevation assisted gas spring monitor arms are equipped with frictionless motion control making it easier to adjust and hold your screen at the perfect viewing angle every time. Capable of a full 360° of screen rotation for easy landscape to portrait viewing and can easily extend towards you to an impressive 525mm from its fixed position while comfortably holding screens up to a max weight of 6.5kg
+ 35°/- 50° incline adjustment means you can tilt the screen forwards or backwards (great for a reading view or a standing break) and will remain completely stable at any angle. This is perfect for moving the screen around in any direction so you can quickly switch from work to gaming, movies or watching TV