Top Tier:OD25mm,350mm Long Bottom:OD28mm,400mm Long Brace X tube:15*30mm square tube,960mm Long Fold height:990mm AP-3206 keyboard standTeeth Double X Keyboard StandPackaging SpecificationsMaster Carton:104.5cm*44.5cm*39cmQty/Carton:5pcsG.W/N.W:22kgs/21kgsTop Tier:OD25mm,350mm LongBottom:OD28mm,400mm LongBrace X tube:15*30mm square tube,960mm LongFold height:990mm