Inch, 2. 5mm apart in sizing to get rings that would fit perfectly. The ew rings are called Xact-Fit. Now we make 14 Xact-Fit rings sizes where other manufacturers make only 3 to 5 sizes in this same range. We made them ot too stretchy, so the rings are effective, but easier to get on and off than a metal ring. We know you will be surprised at how this sizing makes all the difference. Made of a plush soft touch silicone the Xact-Fit ring is premium quality and incredibly strong. Each Xact-Fit ring is stamped with its size so o more guessing! Stack the rings for additional fun. If you if have favourite sizes you can order the perfect Xact-Fit size individually in the future. Size 20 Dia. 2 Inches. Cirum. 6. 3 Inches Size 21 Dia. 2. 1 Inches. Cirum. 6. 6 Inches
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