Comparison : Item # 1031-1601-02-02-02-FG, 1/8"-27 MPT x 1/8"-27 Swivel FPT x 1/8"-27 Swivel FPT Forged Steel MP-FPS-FPS Tee
Item # 1031-1601-04-04-04-FG, 1/4"-18 MPT x 1/4"-18 Swivel FPT x 1/4"-18 Swivel FPT Forged Steel MP-FPS-FPS Tee
Item # 1031-1601-04-06-06-FG, 1/4"-18 MPT x 3/8"-18 Swivel FPT x 3/8"-18 Swivel FPT Forged Steel MP-FPS-FPS Tee
Item # 1031-1601-06-04-04-FG, 3/8"-18 MPT x 1/4"-18 Swivel FPT x 1/4"-18 Swivel FPT Forged Steel MP-FPS-FPS Tee
Item # 1031-1601-06-06-06-FG, 3/8"-18 MPT x 3/8"-18 Swivel FPT x 3/8"-18 Swivel FPT Forged Steel MP-FPS-FPS Tee