Description: Material: Titanium Stainless Steel Color: Gold plated, no easy to fade and rust. Weight: Approx. 12g Suiable to everyday clothing match. Vintage chinese traditional style Taoist Yin Yang Tai Chi. Specification: Size: Ring surface 13mm/0.51inch, thickness 3.5mm/0.14inch, inner perimeter 54mm/2.13inch, inner diameter 17.2mm/0.68inch(number7) Ring surface 15mm/0.59inch, thickness 3.5mm/0.14inch, inner perimeter 57mm/2.24inch, inner diameter 18.2mm/0.72inch(number8) Ring surface 15mm/0.59inch, thickness 3.5mm/0.14inch, inner perimeter 59.7mm/2.24inch, inner diameter 19mm/0.75inch(number9) Ring surface 15mm/0.59inch, thickness 3.5mm/0.14inch, inner perimeter 62.8mm/2.47inch, inner diameter 19.8mm/0.78inch(number10) Ring surface 15mm/0.59inch, thickness 3.5mm/0.14inch, inner perimeter 66mm/2.60inch, inner diameter 20.8mm/0.82inch(number11) Ring surface 13mm/0.51inch, thickness 3.5mm/0.14inch, inner perimeter 68mm/2.68inch, inner diameter 21.5mm/0.85inch(number12) Ring surface 15mm/0.59inch, thickness 3.5mm/0.14inch, inner perimeter 70mm/2.76inch, inner diameter 22.3mm/0.88inch(number13) Package Includes: 1 piece of ring Note: Since the size above is measured by hand, the size of the actual item you received could be slightly different from the size above. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.