lampbase,porcelain lamp holder,ceramic lamp socket 1)E27,E40,E26,E14,B22 2)CE/LVD/ROHS 3)Metal:Copper/ ... Iron/Aluminium Porcelain lampholder,lamp holder,porcelain lamp socket,ceramic ... lampbase 1.E10,E12,E14, E26,E27,E39, E40 lampholder,porcelain knife switch,fuse unit ...