Product Name: Deep groove Ball BearingModel Number: 6800, 6900, 1600, 6000, 6200, 6300, 6400;F681, F691, MF41, F681, F691, F601, F682 to MF128, MF148, F688, F698, F608, F689, and F699; from 681, MR31, 691, MR41, 681, 691, 601 to 689, 699, 609, 629, and 639.Place of Origin: China