This economy steel mandrel is great for forming and shaping solid bangles. The steel construction makes it perfect for heavy work. This mandrel is 9" long including the 1-7/8" tang that can be held in a vise.
The steps are very handy for wider items since each one is the same size without a taper. This gives a more uniform size to your finished piece.
The 4 step are approximately 1-3/4" wide. The diameters of the steps are approximately 49mm, 55mm, 60mm and 65mm
Note that although the mandrel is steel, it is not solid. It would be insanely heavy if it were.