These cuff links are crafted from an MLB Authenticated Game Used Baseball from the following teams: NY Yankees, Los Angeles Dodgers, SF Giants, Detroit Tigers, Boston Red Sox, St. Louis Cardinals, Seattle Mariners, Chicago Cubs, Texas Rangers, NY Mets. Set in sterling silver with swivel findings, these cuff links feature the unmistakable red stitching and the little scratches and scuffs that let you know they have seen game-play. Measures 7/8" in diameter and back hallmarked with respective team. Look up hologram at mlb.com to learn details of exact game ball was used in. Gift boxed with authentication card. Licensed by MLB.