... : 16mm/ 19mm/ 22mm/ 25mm/28mm/30mm/35mm2. Material: Aluminium alloy , Iron3. Color: as clients' requires 4. Surface ... silver ,nickel ) Curtain Finial :1. Material: Zinc alloy , Aluminium alloy , Iron , Resin ,2. Diameter : matching with curtain ... extensible curtain rods , extendible curtain poles , metal curtain rod , die-casting curtain finial , expandable curtain rods , adjustable rod set , ...