Color:Black<br />Material: titanium steel<br />US size 6-13<br />Ring size information:7-12<br />9=diameter(mm）18.9=perimeter（mm）61.5<br />10=diameter(mm）19.8=perimeter（mm）64.1<br />11=diameter(mm）20.7=perimeter（mm）67.1<br />12=diameter(mm）21.3=perimeter（mm）69.5<br />We promise 100% new and top quality<br />Package:1*Ring