AmazonBasics B079YQQDT2 is a single monitor stand with a modular arm mount made of aluminum. It is designed to support monitors ranging in size from 17" to 30" and weighing up to 22 lbs / 10 kg. The stand offers a wide range of motion, including 85°-15° tilt, 90° swivel, and 360° rotation, allowing you to easily adjust your monitor to the most comfortable and ergonomic position. The modular arm mount makes it easy to add or remove monitor arms to accommodate your specific needs. The stand also comes with a variety of mounting options, including a clamp for desks up to 90mm thick and a grommet for desks with holes between 8.5mm and 70mm in diameter.