Comparison : Item # 1317-62-740, 1/4" MPT x 1/8" MPT Reducing Hex Nipple Class 150
Item # 1317-62-741, 3/8" MPT x 1/8" MPT Reducing Hex Nipple Class 150
Item # 1317-62-742, 3/8" MPT x 1/4" MPT Reducing Hex Nipple Class 150
Item # 1317-62-744, 1/2" MPT x 1/4" MPT Reducing Hex Nipple Class 150
Item # 1317-62-745, 1/2" MPT x 3/8" MPT Reducing Hex Nipple Class 150