This six piece ring mandrel set is ideal for making metal clay rings as well as for the traditional wax worker. The steel mandrel stand can be inverted so that you can work on rings from two directions. And the mandrel can be removed from the holder for handheld detail work. The mandrel set consists of six aluminum mandrels covering half sizes 4.5 to 15.5, allowing you to make metal clay rings in sizes 2.5 to 13.5. This size range allows for the approximate 2 size shrinkage when making rings from metal clay.