OKONES Gear Black Stone Cufflinks and 4Pcs Studs for Formal Tuxedo Shirt With a Gift Box 100% Nickel Free,Never fade,diameter:4/5''(20mm) With black stone center and silver color gear edge,4 pcs black studs Comes packaged in an elegant gift box High quality and inexpensive For Birthdays/Anniversaries/Fathers Day/Businessman/Bridegroom/wedding/bridegroom