These cufflinks are made of rhodium plated base metal with a black stripe Dimensions are 20x10mm Great electroplate technique insures long time color retention with thick strengthening clasps that are sturdy and durable and high quality exquisite handcraft Suitable for weddings formal business attire and an overall polished shirt finish look and make the best gifts for men grooms father boss boyfriend or husband Ideal for weddings anniversaries birthdays special occasions and business partnerships