Compatibility: The vesa pole mount bracket fit most suptek desk monitor mount and stand,fit 1.375 (3.5cm) diameter center pole.Fit one monitor up to 27, 10kgs/22lbs and Mounting Holes size 75x75mm and 100x100mm ±90° tilt,360° rotation make this monitor pole mount bracket fully adjustable. What you need for installation this head sleeve is all included in the package.