The 404L Locking Portable Cantilever Mount articulates with a duel hinge arm that extends 25". It has a spring loaded locking pin to secure your LCD, LED Screen or monitor in place when your vehicle is in motion. Simply pull the pin to unlock and swivel into place for perfect viewing. Screen Size: up to 42". VESA Patterns: 50x50 75x75 100x100 200x100 200x200 Material: Cast Aluminum and Steel Arm extends 25" away from wall Viewing Adjustments: 180 degrees left to right 10 degrees up and 12 degrees down