3.5" OD 90 Deg. Mild Steel Mandrel Bend, 16 Gauge - 3.5" Radius, 4" Leg x 8" Leg Item ID: 090MS16-350350-4X8 Wall (spec): 0.065" (16 Gauge); Size (spec): 3-1/2" OD on 3-1/2" Radius Material (spec): 1010 Mild Steel Leg (spec): 4" x 8"; Tube OD (spec): 3.5"