6903-2RS BMX Sealed Bearing - 30mm-17mm-7mm
$ 7.99
This is one 6903-2RS bearing. This bearing will work with many hubs. It has an OD of 30mm, and ID of 17mm and thickness is 7mm.
This is one bearing; if you need a pair, buy 2!
The color of the bearing seals may vary. They may be red, black or blue.
Be sure to measure your old bearing to ensure this will fit.