Integrate adjustable system optional 1~2 arms on one pole - Only 1 arm included in the package - Easy to install with the perfect Grommet desk mount - Superior flexibility and movement strength and stabilityTable hole diameter range: 20~102mm - 360 degrees display side-to-side rotation - Swivel any directions: 20 degrees - LCD monitor swivel: 360 degrees - Horizontal moving dist: 0~120cm - Vertical moving dist: ~40cm, weighing: 20kgs