You are bidding on approx. 50 pcs. Brass Tees, male, with 5/8-18 Thread 45 Deg mating surface on all three connections. I believe these are 5/8" SAE. Industrial surplus, never installed. If you use these frequently, this will be a good deal for you; opening bid is just a few dollars above scrap price. Items shown in pictures are what you will receive.