counterbalance monitor arm

Mount-It! Height Adjustable Dual Monitor Wall Mount | Supports Monitors w/ 75x75mm and 100x100mm VESA Patterns & Screens 17" to 32" | Cable Management

Mount-It! Double Monitor Desk Stand Fits 21 - 32 Inch Computer Screens | Freestanding Base | 2 Heavy Duty Full Motion Adjustable Arms

Mount-It! Dual Monitor Desk Mount, Dual Monitor Arm Fits 2 Monitors max. 32" / 19.8 Lbs., Full Motion Adjustment Monitor Mount with C-Clamp, White

Mount-It! Heavy Duty Computer Monitor VESA Adapter Mounting Kit Up to 27" Black

Mount-It! Full Motion Dual Arm Monitor Wall Mount, Works with Monitors from 13" to 27" Weighing Up to 14.3 lbs.