Application: Fit most LCD, LED flat screen TVs and monitors up to 27 inches, and support weight up to 22 lbs. per arm. Fits VESA 75x75mm or 100x100mm. The free-standing glass base is 16.8x10.2. The 4 diameter Grommet-Base applied to 0.4-3 thick desk Adjustable: Monitors can shift side-to-side along the 31 arms and the arms can move up and down along the 16 height pole. It allows +/-90° tilt and +90°/0° swivel to change reading angles and 360° rotate from landscape to portrait mode