... . Bearing ferrule and ball hardness: 59 - 63HRC item bearingkoyo deep groove ball bearingsmaterialchrome steel, carbon steel, ... and competitive pricedefinedrodamientosnaturehigh speed, high precisionsupply bearings item:6214 6308 6405 16019 618266215 6309 6406 ... , HRB, THK, KLT ect. And we can supply your designated brands and your own brand. ***********************************************TiffanySales ...