Condition 100% Brand new---------------Quantity 1PCS---------------MetalStainless steel---------------Provide Hand Engraved Words on the Inside for Free，send Email to Tell Me---------------Ring sizeAs the title，Size selectable---------------GenderUnisex---------------WidthMale 6mm，Female 4mm                                        Please Read This On How To Choose Your size: First 2-3 digits Before the decimal point is for the Men's size， the digits After the decimal point is for the Women's size. For example， 11.5 = Men's size 11 and Women's size 5， 105.55 = Men's size 10.5 and Women's size 5.5---------------Condition 100% Brand new---------------Quantity (two rings)---------------Metal Stainless Steel   <br /><br />The rings size:USA code，  for example<br />   Diameter      Circumference  <br />5: 15.8           50  <br />6: 16.4           52  <br />7: 17             54  <br />8: 18.2           57  <br />9: 19             60  <br />10: 19.8          62.5