Comparison : Item # 1317-64-363, 1/2" MPT x 1/2" FPT x 1/2" FPT Street Tee Malleable Iron Galvanized Class 150
Item # 1317-64-364, 3/4" MPT x 3/4" FPT x 3/4" FPT Street Tee Malleable Iron Galvanized Class 150