THIS TWO SIDED RUBBER SEALED BALL BEARING REPLACES PART NUMBERS 6204-2RS, 7012828YP, ALLIS CHALMERS 1652231, ARIENS 05412300, 129895, 99158, CASTLEGARDEN 1921032/0, ST207, SU-9001310-0001, 91102-VA4-013, 91102-VA0-13, 91102-VAG-013, 532 12 98-95, JD7677, JD10363, AM124479, JD7142, 08101-06204, 230-029, LESCO 050384, N1568, 350396X1, 741-0919, 941-0919, 55541, 55541MA, 118011, 2118011SM, 118011SM, 2118011, 1-2828, 7012828, 7012828YP, 251-8, 251-297, 112-0377, 251-204, 251-224, 251-318, 1185121, 1728255, 0182662, 24-1010, 089040, 5979160, 107-204, BB974, NHC 272-7629, 45-204, 45-403, 45-259, 7-04295, 021101, 76-204, 17-517, 442, SB-442, MT-24, AND B1SB442. THIS IS A REPLACEMENT BALL BEARING FOR THE BOTTOM MANDREL SPINDLE SHAFT PART NUMBERS 128285, 130794, 133172, 137641, 137645, 532128285, 532130764, 532133172, 532137645, AND 165579. HEIGHT: 9/16" ID: 25/32" OD: 1 27/32". Warning:Lead-Nickel-Cancer and Reproductive Harm