Ring Mandrel made by Swanstrom, barely used and in great condition. Comes in protective plastic tube case. Retails online for $50-68.

“This high-quality ring mandrel from Swanstrom allows you to form, shape and accurately size rings. A smooth, highly polished surface helps prevent marring the inside of the ring as you work. It has a usable work surface of 9-3/4” (247.6mm) and is laser-engraved with clear markings; rings sizes 1–16 (U.S.) in ¼ increments. Made of an alloy tool steel, this mandrel has a 58 Rockwell hardness and can withstand hammering tasks.”