... .E10,E12,E14, E26,E27,E39, E40 lampholder,porcelain knife switch,fuse unit series etc.2.Metal: aluminium/iron/copper/brass/stain ... .7. Meet CE/LVD/ROHS standard ModelPorcelain E14, E27, E40 Series etc. Body MaterialPorcelain/ ceramic Metal MaterialScrew shellaluminium/iron/copper/brassCenter ...