Single Monitor Mount With Articulating Arm | 15? to 32? monitor support | VESA mounts 75×75/100×100 | Clamp and grommet mounting | Amer Mounts HYDRA1B Amer Mount’s HYDRA1B Single Monitors Aluminum Slim Mechanical Spring Monitor Articulating Arm comes with Top Fix fitting, which means this type of arm is perfect for limited space underside of the desktop. Its optimizing elbow spring gauge offers the performance and quality needed for weight adjustment. Quick-release VESA plate and detachable joints make it an ideal support for longer life and easy installation.