... : 4A-6A Suitable for lighting CE Certificate Safe Usage Ceramic lamp holderAppointed Logo can be don;Aluminum or iron or ... copper screwshell;Ceramic Lamp Holder e27 Ceramic Lamp Holder, with 110 to 600 Voltage, ... ): iron, aluminum, copper, brass screw shell selectabla, brass central connector selectable zinc alloy, copper rivet selectable, iron bracket Packing : 400pcs ...