2 Packs Ali Tronics E26 to E39 Adapter (Medium Base E26 to Mogul Base E39), Ceramic Material-high Voltage and High Temperature Resistant,e26 Socket Transfer your lamp with E39 mogul base to medium base E26 Ceramic material,high temperature and high temperature resistant Up to 660 Watts MAX Up to 300 Volts MAX Durable and high quality adapter