BUTTON COVER FORMAL SET COMES WITH 5 BREAST BUTTONS 15MM(1/2") 2 CUFF COVERS 18 MM.(3/4") 18KT GOLD PLATED WITH HIGHLY POLISHED BLACK ENAMEL. GREAT LIGHT WEIGHT SET MADE TO FIT ANY SHIRT BUTTON 12MM AND SMALLER THESE ARE LARGER THAN STANDARD SHIRT STUDS FOR A BOLD LOOK BECOMING VERY POPULAR!!!!