Fine-tune your monitor setup to perfection with full-motion arm, featuring 35° upward and downward tilt, 180° swivel, and 360° screen rotation. The monitors with 18.8" center pole, which supports raising your monitors up to 28" and extending your screen up to 16.6" each. C-clamp and Grommet bases are both included in the package for a quick and easy installation, C-clamp fits most desktops from 0.4" to 3.4" thick with a needed 3.1" depth, Grommet mount supports up to 3.3" thick with a Grommet hole diameter between 0.4" to 2.3"