Detailed Product Description deep groove ball bearings features:1.Bore diameter from :6mm-50mmBearing range:60 Series:606,607,608,609,6000,6001,6002,6003,6004,6005,6006,6007,6008,6009,601062 Series: 626,627,628,629,6200,6201,6202,6203,6204,6205,6206,6207,6208,6209,6210,6211,6212,6213,6214,621563 Series:6300,6301,6302,6303,6304,6305,6306,6307,6308,6309,6310,6311,631268 Series:686,688,689,6800,6801 ...