Comparison : Item # 1317-28-211LF, 1/8" MPT Hex Nipple Lead Free Brass
Item # 1317-28-212LF, 1/4" MPT Hex Nipple Lead Free Brass
Item # 1317-28-213LF, 3/8" MPT Hex Nipple Lead Free Brass
Item # 1317-28-214LF, 1/2" FPT Hex Nipple Lead Free Brass
Item # 1317-28-215LF, 3/4" MPT Hex Nipple Lead Free Brass