Compatible with ACER SA0-Series models : SA220Q , SA230 , SA230 bi , SA240Y , SA270 , SA270 Bbix Compatible with ACER SB0-Series models : SB220Q , SB220Q bi , SB230SB240Y Bbix , SB270 Bbix Compatible with ACER HA0-Series models :HA220Q , HA270 Compatible with Acer R1-Series : R221Q , R231 bmid , R241Y , R240HY , R240HY bidx Compatible with Acer RT-Series : RT240Y,RT270,R271,R271Q Bbix , RT270 Compatible with Acer G7-Series : G227HQL , G237HL , G247HYL , G257HU , G257HL Compatible with Acer : H226HQL,H236HL,H276HL - Material: cold rolled steel + black matte coating - Maximum load capacity: 50kg - VESA hole spacing: 75x75mm / 100x100mm - Product size: 115*115*30mm - Immediately unlock the new posture of the monitor! Say goodbye to the constraints of a fixed screen, let your monitor move as you wish and enjoy a healthier and more comfortable visual experience