Longer lasting than a phenolic socket, this medium base (E26) light socket is perfect for most light to medium-duty applications. It is made of commercial quality white glazed porcelain and rated for a maximum wattage of 660 watts and a maximum voltage of 250 volts. With 18-inch black and white leads, the installation of this socket is a cinch. Equip your lighting fixture with this medium base porcelain socket!