Michael Kors Mercer link mini hoops are finely crafted from 925 sterling silver with 14K rose gold plating. Post/clutch backing. Measurements: - 0.5 inch Inner diameter - 0.25 inch Wide Included: - Jewelry care instructions booklet with translation in English and various languages. - non-abrasive Michael Kors care pouch provided with your jewelry to maintain its brilliance and protect against scratching and tarnishing. - soft buffing cloth (approximate measurements: 5.5 inches x 5.5 inches)