Comparison : Item # 1317-64-390, 1/8" FPT Cross Malleable Iron Galvanized Class 150
Item # 1317-64-391, 1/4" FPT Cross Malleable Iron Galvanized Class 150
Item # 1317-64-392, 3/8" FPT Cross Malleable Iron Galvanized Class 150
Item # 1317-64-393, 1/2" FPT Cross Malleable Iron Galvanized Class 150
Item # 1317-64-394, 3/4" FPT Cross Malleable Iron Galvanized Class 150