Description: Material:Made of quality 316L stainless steel,high resistance to rust,corrosion and tarnishing,smooth and comfortable. Dimensions:Width 13mm,Available US Size 7-13. Engraved Yin-Yang symbol on the surface,This tai chi ring is a symbol of as well as a talisman, It will protect you and your family and friends. A Gorgeous Black and White, Yin Yang Signet Ring, A Perfect Balanced Ring between Traditional Spirit and Modern Look Suit to wear Everyday. Designed to be worn as an accent piece for casual dress,Also an ideal gift for familes or friends on birthday, graduation, Mothers' Day, Thanksgiving, Christmas, Valentine's Day, etc. Specification: Material: Stainless Steel Width: Approx. 13mm / 0.51inch Thickness: Approx. 3.5mm / 0.13inch US Size: 7-13 for Men and Women Size 7: Diameter(17.2mm),Circumference(54mm) Size 8: Diameter(18.2mm),Circumference(57mm) Size 9: Diameter(19mm),Circumference(59.7mm) Size 10: Diameter(20mm),Circumference(62.8mm) Size 11: Diameter(21mm),Circumference(66mm) Size 12: Diameter(21.5mm),Circumference(68mm) Size 13: Diameter(22.3mm),Circumference(70mm) Package Includes: 1 Piece Tai Chi Finger Ring(2 Pack) Note: Please allow 1-2mm error due to manual measurement.pls make sure you do not mind before you bid. The colors may have different as the difference display,pls understand.