Comparison : Item # 1317-64-703, 1/2" FPT Locknut Malleable Iron Galvanized Class 150
Item # 1317-64-704, 3/4" FPT Locknut Malleable Iron Galvanized Class 150
Item # 1317-64-705, 1" FPT Locknut Malleable Iron Galvanized Class 150
Item # 1317-64-706, 1-1/4" FPT Locknut Malleable Iron Galvanized Class 150
Item # 1317-64-707, 1-1/2" FPT Locknut Malleable Iron Galvanized Class 150