Bilipala Key to My Heart Keyring Couple Alloy Keychain for Valentine&rsquo;s Day Gift The cute smiley couple keychain is a great Valentines Day gift for couples. The keyring is a he & she combination item. The keychain is both for personal use and gift purpose. Material: zinc alloy. Size: Ring-1.2 inches (3 cm), Heart Shape: 1 inch (2.5 cm), Key Shape: 1.3 inches (3.2 cm) Long.