Ergotron LX HD Sit-Stand Desk Mount LCD Arm - Mounting kit ( pole, VESA adapter, sit-stand arm, desk clamp base, grommet-mount base ) for LCD display - aluminum - polished aluminum - screen size: up to 46" - mounting interface: 100 x 100 mm, 75 x 75 mm, 200 x 200 mm, 200 x 100 mm More for the money with this high quality Product Offers premium quality at outstanding saving Excellent product 100% satisfaction