Ring Size:S: 4 CM/1.6 INCHM: 4.5 CM/1.8 INCHL: 5 CM/2.0 INCHLength:The cage length is 4.1CM/1.6" with an inside diameter of 3.5CM/1.4".Material: 304 stainless steelColor: SliverPackage: OPP Bag