1.38" OD 180 Deg. Mild Steel Mandrel U-Bend, 16 Gauge - 2.5" Radius, 6" Legs Item ID: 180MS16-138250-6X6 Wall (spec): 0.065" (16 Gauge); Size (spec): 1-3/8" OD on 2-1/2" Radius Material (spec): 1010 Mild Steel Leg (spec): 6"; Tube OD (spec): 1.38"