Made of 16 gauge (.0625" thick) mild steel.  Choose desired diameter.  Dimensions listed below for each bend.  Diameter is measured on the OD of the pipe, bend radius is measured from from center of bend to centerline of pipe.  Legs are measured from tangent of bend to the end.

1.50" diameter, 2.25" bend radius, 3" legs

1.625 diameter, 2.5" bend radius, 3.5" legs

1.75" diameter, 3.0" bend radius, 4" legs

2.5" diameter, 3.75" bend radius, 5" legs

3.0" diameter, 4.0" bend radius, 6" legs