This is a ring sizer and shaping mandrel used for making rings with fine silver clay like PMC3 Silver and Art Clay Silver. I believe the method is to measure the size and then shape the clay on the mandrel one size larger. It shows signs of use, but should be fully functional. It will be sent via Yu-Packet Post. #ClaySilver #SilverClay #FineSilverClay #Metalwork #SilverAccessories #Tools #Tool #Equipment #ARTCLAY #MitsubishiMaterials #RingGauge