PHYHOO Ring Sizer Set Metal Mandrel Gauge Finger Size Measure Rings Sizing Measurement Tool Jewelry Making Tools Jewelers Loop US 0-13 Order Contains:Metal Ring Mandrel and Metal Ring Sizer (Pack of 1) Metal Ring Mandrel Size :US Size 0-13 Material: Aluminum Ring Uses:Ring Can be Measure Finger Size; Ring Mandrel Uses:Ring Mandrel Can be Select Ring size Often used in the production of jewelry rings, wedding rings can also be scheduled through this tool