If you have a desired inner circumference, please be sure to let us know before purchasing. It will cost an additional 50 yen for every 1 cm increase. Reducing the size is free. Inner circumference: Approximately 16 cm (stretches) Engraved Four Gods Onyx 10mm Dzi Agate 10mm *The number of stones varies depending on the size. [Azure Dragon] Prosperity in business, gaining immense wealth. It is said to lead to success, advancement, and wealth. [White Tiger] Keeps a watchful eye to prevent the escape of fortune and drives away bad luck. It is said to lead to fertility and safe childbirth, as well as family safety and prosperity in business. [Vermilion Bird] It is said to ward off evil and bring peace and good fortune. It is said to illuminate the land and lead to comfort and prosperity for the family. [Black Tortoise] Brings prosperity and longevity. It is said to protect from private problems such as relationships, family, etc. [Dzi Agate] Dzi Agate is the "eye of God" that repels evil and monitors darkness. It has a strong effect of warding off evil and bad luck, so it is recommended to wear it daily as a protective amulet. It is a powerful stone with strong effects for improving luck, including financial fortune, so it may be good for those who feel unlucky or that things haven't been going well recently. Also, for those who are troubled by being too sensitive and seeing various things, wearing it may help them live their daily lives more easily. *Because they are natural stones, the colors and patterns may vary even in the same type. *Colors may differ from the actual product depending on the lighting. Also, it may contain cracks and inclusions unique to natural materials. Please understand this beforehand.