Lamp Cord Has Clip-in Candelabra Socket, Rotary Switch And Molded End Plug. 6 Ft. White (Set of 20) Wire is SPT-1 rated to 105 degrees Socket takes up to a 40W candelabra base bulb End plug is polarized and molded onto cord Snap-in clip on socket fits into a 1" hole Components are U.L. listed