1,CF30wheel and pin bearing ,also is our typical series. 2,the inner diametre from ... 35mm is our scape 3.the precision 1,CF530wheel and pin bearing,also is our typical series.2,the inner diametre from ... ,we can accept nonstandard parts5,the nut is silvery, and pin is balck normal6.the detail data please visit our website7 ... help,tell me please.8.welcome inquiry. CF30 wheel and pin bearing