■ Genuine Tortoise Shell Cut Ring (Barafu) - 33 (No. 12) ★ Front Height 0.7 inches (17,7 mm) Width 0.7 inches (17,7 mm) Thickness 0.3 inches (8 mm) ★ Please select the size above your K18 ★ Width of the back circle ◎ Tortoise Shell Warranty Card Included