... :Iron, AluminumDiameter:16, 19, 22, 25, 28mm etc.Thickness:0.5, 0.6, 0.7,0.8mmLength:1-6mColor:Antique-brass ... smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum)5.Hook Material:Iron, AluminumColor:Antique-brass, Antique-copper, Satin-nickel ... Oxidation (aluminum) Iron, Aluminum Alloy, Zinc Alloy, Plastic, Crystal, Resin, Wooden Curtain rod finial