... ,Satin-black etc. as per request.Surface:Electroplating, Electric smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum)3. BracketMaterial:Iron, Aluminum ... ,Satin-black etc. as per request.Surface:Electroplating, Electric smelting, Spray painting, Flame plating, Oil injection and Oxidation (aluminum)4. RingMaterial:Iron, PlasticDiameter ...