Size: about 9MM wide ring wall thickness is about 6MM<br />Material: 316L + titanium artificial<br />Process: after polishing black to do the old treatment (non market spray treatment)<br />Style: Unisex<br />Color: Silver<br />Ring size：7，8，9，10，11，12，13<br />Note that if you do not know which size is suitable for you， please refer to the following table.<br />U.S. size6 diameter 16.5mm perimeter 52mm<br />United States 7 sizes 54mm 17.3mm perimeter diameter<br />U.S. size8 57mm 18.2mm perimeter diameter<br />U.S. 19mm 60mm size9 diameter perimeter<br />U.S. size10 62mm 19.8mm perimeter diameter<br />U.S. size11 66mm 20.7mm perimeter diameter<br />U.S. size12 70mm 21.5mm perimeter diameter<br />U.S. size13 70mm 22.7mm perimeter diameter