Size:about 8mm in width,U choice diameter size
<br />(please dont use your image to judge size,1-2 mm allowable error)
<br /> 
<br />Size Reference
<br />6 size=16mm in diameter
<br />7 size=17mm in diameter
<br />8 size=18mm in diameter
<br />9 size=19mm in diameter
<br />10 size=20mm in diameter
<br />11 size=21mm in diameter
<br />12 size=22mm in diameter
<br />13 size=23mm in diameter
<br />
<br />100% new and high quality.
<br />Material: Stainless Steel
<br />Finishing: Brushed
<br />Width: 8mm
<br />Color: Black Silver Gold
<br />Size:US Size 6 7 8 9 10 11 12 13
<br />Package included:1 PC