COFO Zero Gravity Monitor Arm Pro (Dual - Black)

The listing

Smooth single finger adjustments with rock-solid stability. Equipped with double mechanical springs, it supports a wide range of monitors from 5.5 to 30 lbs (2.5–14 kg). Industry-first torque adjustment dial lets you fine-tune the holding strength of the arm. No tools, just touch. Even large screens rotate a full 360° with ease. A seamless design with an integrated cable cover keeps your desk clean and organized. In excellent condition. A new one costs $240 plus tax.