YM0774X Magnetic ring with a simple appearance Features a strong magnetic performance Perfect for collection or magic shows Size: 8 Inner diameter: About 18 mm INTERNATIONAL RING SIZE CHART USA & Canada Australia， UK & Europe ASIA (Hong Kong，China， Singapore， Taiwan， Japan & Macau) Circumference Diameter mm inch mm inch 4 - 7 45 1.77 14 0.55 4½ - 8 46.5 1.83 14.8 0.57 5 J ½ 9 49 1.93 15.6 0.61 6 M 12 52 2.05 16.4 0.65 7 O 14 54.5 2.15 17.3 0.68 8 Q 16 57 2.24 18.1 0.71 8½ Q½ 17 58.3 2.3 18.5 0.73 9 S 18 59.5 2.34 18.9 0.74 9½ S ½ 19 60.8 2.39 19.3 0.76 10 T ½ 20 62 2.44 19.7 0.78 10¼ U 21 62.7 2.47 20 0.79 10½ U½ 22 63.4 2.5 20.17 0.79 11 V ½ 23 64.5 2.54 20.6 0.81 12 Y 25 67.5 2.66 21.4 0.84 Package Details Weight: 8.56 g Size: 2.2*2.2*0.7 cm Package Includes * Stylish Magnetic Ring Sz 8