Model: E26 To E39(Compatible E27 To E39) Color: White Rated Voltage: 110V-230V(Suit for All Voltage) Metal Material: Copper Conductive Films Other Materials: Flame Retardant PBT Product Introduction: This Product Is E26 Lamp Holder And Lamp Holder E39 Adapter,Apply To Transfer a E39 Lamp Holder In the E26 Lamp Holder. Note: In the E26 Lamp Holder Conversion Using E39 Bulbs. Does Not Convert Voltage!!! Package includes:1pack or 3 pack or 5 pack adapters