Comparison : Item # 1317-10-373, 1/4" Tube O.D. (7/16-20 Thread) Male Forged Cross SAE 45 Degree Flare Brass
Item # 1317-10-374, 5/16" Tube O.D. (1/2-20 Thread) Male Forged Cross SAE 45 Degree Flare Brass
Item # 1317-10-375, 3/8" Tube O.D. (5/8-18 Thread) Male Forged Cross SAE 45 Degree Flare Brass
Item # 1317-10-376, 1/2" Tube O.D. (3/4-16 Thread) Male Forged Cross SAE 45 Degree Flare Brass