USA(美国)U.K.(英国)Japan(日本)China(中国)Diameter-直径(mm)Circumference-周长(mm)5J 129915.6049.006M121216.4052.007O141417.3054.508Q161618.1057.009S181818.9059.5010T 12202019.7062.0011V 12232320.6064.5012Y25252