KINGSO E26 Light Socket Solid Brass 6 Finishes Vintage Edison Pendant lamp holder With Knob 110-220V UL Listed,medium E26 Standard Base Rated for up to 250 Watts / 250 Volts Cap base has 1/8 IPS standard lamp pipe thread with set screw Six colors:antique brass,black,red antique brass,Rose gold,chrome color,copper color Installation note: These sockets, like most self wire-able metal sockets, come with a cardboard lining inside. This should be left in as it acts as an insulator. Do not remove it.