ordered 2 nsk608z bearings but can't use them, wanted them for a dishwasher motor and they are only shielded on one side, the old bearings were shielded on both sides and made in Korea they were too nsk608z, they removed the numbers and letters from the old stock, they thought I'm ordering the right ones. Your ads should say shield on one side instead of a single shield. .I just spent $30