[Height adjustable/combinable column] A column that combines three-tiered poles and has a height of 164 cm. In addition, the first stage pole (40cm) can be removed and used lower. By turning the rotar more→y knob's screw-type knob counterclockwise, you can easily fix the arm, allowing you to comfortably operate the screen without worrying about the arm falling. The height range of motion of the two-stage pole is 80-164cm above the ground, and the height range of motion of the single-stage pole is 40-124cm above the ground. Free your hands to stand, lie down, sit, watch TV, enjoy entertainment, work or study, making it your best assistant. [360 Degree Rotation] The tablet stand holder uses a ball joint,…