This bracket is designed for two standard VESA compliant mounts 3" x 3" (75 mm x 75 mm) or 4" x 4" (100mm x 100mm). Each bracket can handle monitors up to 25 lbs each. The Z-arms are built with five knuckles for adjusting. They swivel left and right with a total 180°. The monitors can swivel 270°. The monitors will also pivot upwards & downwards. The Z-arms are mounted on an 18" pole and may be adjusted in height to accommodate the user. The Z-series clamp can also be wall-mounted. Limited five year warranty except for electronics and motors which are covered for one year as are Lights and illuminators.