... Size:E27,E40,E26,E14,B22 ,GS Metal:Copper/Iron/Alum Porcelain lampholder,lamp holder,porcelain lamp ... unit series etc.2.Metal: aluminium/iron/copper/brass/stain steel 3.Professional Manufacturer4. Metal: aluminium ... etc. Body MaterialPorcelain/ ceramic Metal MaterialScrew shellaluminium/iron/copper/brassCenter connectCopperWire connectCopper/ironVoltage110V-660VElectric4A-6AAvailableWire0.75mm; 0. ...