Chief (3X1) Table Stand Hardware Mount Black (K3F310B) Telescoping Arm rails add8" (20. 3 cm) per Arm of lateraladjustment for larger monitors Centrisheads can easily be moved from the telescoping rails to the array arms for nearly unlimited lateral adjustment, so aligning monitors horizontally is a breeze Patented Centristechnology in heads provides smooth, fingertiptilt12 Degreein all directions Independent height adjustment of each arm and each center head along the column provides easy fine-tuning of vertical screen alignment Array arms can be adjusted from flat up to a 15 Degreeangle toward the user for optimization of viewing angles