PROLEGEND® PL-MGP3204 DUAL MONITOR POLE-MOUNTED GAS SPRING MONITOR ARM. PROLEGEND® PL-MGP3204 Designed with thin arms and ample adjustments, Thin Gas Spring Monitor Arm provides the user with an unparalleled mounting solution – improving both work comfort and efficiency. The sturdy arms move smoothly, even while holding monitors from 17” to 32” weighing 9kg/19.8lbs. A quick-release joint is designed for easy assembly while reducing packaging size. We have Complete range of Monitor mounts single Dual Quad available.