Metal: alloy,Diameter of the 4 rings: about 15mm, 16mm, 18mm, 19mm (0.59'', 0.62'', 0.70'', 0.74''),Metal Color: vintage silver, please refer to the pictures,Total Weight: 28g,Package include: 4 Pieces rings (other things are not included in the pictures),Please allow slight deviation of measurement.,Tips:If you have any problems in the shopping process, please contact us at any time.Happy shooping online!