Product Information：
Type: Ring
Material: copper
Style: couple type
Color: TJ-340 "stack" male models, TJ-340 "stack" female models
Size: openings can be adjusted
Size: men's diameter: 18.1mm ring width * thickness: 6.1 * 2mm women's diameter: 17.3mm ring width * thickness: 4.7 * 1.6mm