Comparison : Item # 1317-655320C, 5/32" Tube O.D. Composite/Brass Body D.O.T. Push-to-Connect Union Elbow
Item # 1317-650400C, 1/4" Tube O.D. Composite/Brass Body D.O.T. Push-to-Connect Union Elbow
Item # 1317-650600C, 3/8" Tube O.D. Composite/Brass Body D.O.T. Push-to-Connect Union Elbow
Item # 1317-650800C, 1/2" Tube O.D. Composite/Brass Body D.O.T. Push-to-Connect Union Elbow