4" OD 45 Deg. Mild Steel Mandrel Bend, 16 Gauge - 4" Radius, 6" Leg Item ID: 045MS16-400400-6X6 Wall (spec): 0.065" (16 Gauge); Size (spec): 4" OD on 4" Radius Material (spec): 1010 Mild Steel Leg (spec): 6"; Tube OD (spec): 4"