Brand new custom-made industrial steel pipe light sockets. These are 1 1/4" at the socket end and reduce down to 1/2" for use with other 1/2" pipe. These are designed to use in building your own lamp or project lighting. The light sockets are affixed to the pipe, so you don't have to worry about them coming loose. I have other sizes and shapes in my shop as well if you're looking for something else. Thanks