Comparison : Item # 3259-54-1304-00, 3/4" IPS x 1/2" CTS Reducing Coupling
Item # 3259-54-1404-00, 1" IPS X 1/2" CTS Reducing Coupling
Item # 3259-54-1514-A0, 1 1/4" IPS X 1" IPS Reducing Coupling