ALL SURFACE: Built for play on all court docket forms to help you follow on hardcourt, clay, or grass courtsFit Your Screens and Desks- Each arm can match 13 to thirty inches flat/curved monitors with Vesa pattern 75x75 and 100x100; Each arm retains 4.4lbs to 19.8lbs. Regarding the desk, we advise picket desktops as well as suitable desk thickness