Tee | Coupling | Socket Weld or Threaded True Union | Socket Weld x Threaded | Sweat x MIP | Threaded x Threaded | Threaded | 1-1/4" x 1-1/4" | 1-1/4" x 3/8" | 3/8" x 1/8" | 3" x 1-1/2" | 4" x 1/2"