6200-2RS BMX Sealed Bearing 30mm-10mm-9mm
$ 5.99
This is one 6200-2RS bearing. This bearing will work with many hubs. It has an OD of 30mm, and ID of 10mm and thickness is 7mm.
This is one bearing; if you need a pair, buy 2!
Be sure to measure your old bearing to ensure that this will fit. The appearance of this part may vary slightly from the photo.