Porcelain lamp holder 1.Approved CE 2.Other types:E10,E14,E27,E40,B22 3.Metal:copper,alu,iron,nickel plated ... ,copper,iron,zinc alloy,nickel plated3.Other type:E10,E12,E14,E26,E27,E40,B224.Can be with wires,accept OEM5 ... of ceramic lamp holder.Welcome to inquiry. Porcelain lamp holder ( E14 )