... plain pip, twisted pipe, embossed pipe, chromed pipe.Pipe material: iron, aluminum, stainless steel.Pipe thickness:0.5mm,0.6mm,0.7mm ... :Bracket type: double bracket, single bracketBracket material: zinc-alloy, aluminum,iron.Bracket dia:28-22mm, 28-19mm, ,19-16mm.Curtain Rings ... :Material: iron, plastic.Inner diameter:35mm,42mm,48mm.Surface Treatment Colors:Plating ...