This high quality Lamp Socket and Cord Combination has flexible clips on the socket that snap into a 1" hole. In addition, the socket has a metal lining that resists corrosion and can accommodate any candelabra base bulb up to 40 watts. The 6 inch cord is made of SPT1/105 degree wire and exits from the bottom of the socket. The ends of the cord have been stripped approximately 3/4" to make connections quick and easy. The individual parts in this set are all U.L. listed. This is a popular cord set for illuminating small craft or novelty projects or on installations where a number of add-on sockets are required. For indoor use only.