... E10) Voltage:250V Electric Current:4A Other Size:E27,E40,E26,E14,B22 ,GS Metal:Copper/Iron/Alum Porcelain lampholder,lamp holder ... ,porcelain lamp socket,ceramic lampbase 1.E10,E12,E14, E26 ... ,E27,E39, E40 lampholder,porcelain knife switch,fuse unit series etc.2.Metal: aluminium/iron ...