Description:<br /><br /> Material: Alloy<br /><br /> Color: Blue, Green<br /><br /> Diameter For Selection: 16mm, 17mm, 18mm, 19mm<br /><br /> Weight: About 3g<br /><br />  <br /><br /> Package Included:<br /><br /> 1 x Ring<br /><br />  <br /><br /> Notice:<br /><br /> 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please consider this before the purchase.<br /><br /> 2.Please allow slight deviation for the measurement data.