Style: European and American style，retro styleMaterial: AlloyProcess: jewelsCategory: RingStyle: UnisexModeling: geometry typeFunction: anti-fatiguePackaging: Individually wrappedOccasions for gifts: Souvenir， weddingUS Size 6 : diameter 16.5mm perimeter 52mmUS Size 7 : diameter 17.3mm perimeter 55mmUS Size 8 : diameter 18.2mm perimeter 57mmUS Size 9 : diameter 18.9mm perimeter 59mm