Ring Sizer & Grooved Mandrel Set Plastic Ring Finger Sizer 1-13 The Purpose of a ring sizer is for you to have the ability to size a finger if a ring is not present. Simply select the most appropriate size for whichever finger you wish to measure, so it fits smoothly over your finger. Once it fits comfortable to your liking, that is the correct finger size. Simple as...well this ring sizer! Plastic Ring Mandrel Ring Mandrel are used for sizing rings - if you don't have the person you wish to measure present but you have their ring you can easily size the ring using our "Ring Sizer Mandrel" which ranges from sizes 1-15. Ring Sizer & Grooved Mandrel SPECIFICATION Brand Name Rosenthal Collection Manufacturer RJS Category Jewelry Sizers & Mandrels Condition New Quantity 1 Item Dimensions 12.01 x 1.5 x 0.98 inches Item Weight 0.64 ounces Material Hard Plastic Ring Range 1-13 Mandrel Range 1-15