We are Lianyungang Huayun Structural Materials Co., Ltd China. We manufacture The Scaffoldings and Its Accessories for many years. The Props we supplied with many specification such as 1.Height of Use1.75m---3.0m Weight 8.3kg/Piece Inner Tube(Diameter*Thickness)41mm*2mm Outer Tube(Diameter*Thickness)48mm*1.8mm 2.Height of Use2.2m---4.0m Weight10.2kg/Piece Inner Tube(Diameter*Thickness)41mm*2mm Outer Tube(Diameter*Thickness)48mm*1.8mm and so on. By the way other specifications are available at the customer's request. If you have any demand or questions you can contact us freely. Your contacting will be appreciated. We look forward to cooperating with you.