Comparison : Item # 1317-65-410, 1/8" FPT Coupling Malleable Iron Black Class 150
Item # 1317-65-411, 1/4" FPT Coupling Malleable Iron Black Class 150
Item # 1317-65-412, 3/8" FPT Coupling Malleable Iron Black Class 150
Item # 1317-65-413, 1/2" FPT Coupling Malleable Iron Black Class 150
Item # 1317-65-414, 3/4" FPT Coupling Malleable Iron Black Class 150