This was a sample but it is only one I have available.. See pictures for details. 

Size: 10-1/2" long

Single coupling on one end is tapped 1/4F IPS on one side and 1/8F IPS on the other side and is 7/8" long

the couplings on the other end rotate independently and are tapped 1/4-F IPS on the ends and 1/8F IPS in the center of each coupling. 

there are some misc plug parts that come with it i guess to plug the holds not being used. 

Perfect for a sconce, maybe floor lamp or create something totally unique.