The PLT 80-1047 is a solid brass, 4-piece light socket with nickel finish that uses a 3-way bulb to produce three levels of light in a low-medium-high configuration. With 2 terminals and 2 circuits, this 3-way light socket features a removable brass turn knob and medium (E26) base. Threaded to fit 1/8 IPS pipe, this 4-piece socket set is equipped with a solid brass shell, cap, ring, and cardboard interior. So, whether your building or repairing lamps, this nickel finished, on/off socket set will provide practical lighting with the option to alter the appearance! Screw set included for easy mounting.