Single axle ezloaders should have either 2000 or 3500 lb axles.The inner and outer bearing cages will have the # stamped on them. Probably something like L44649 for the outer bearing, and L68149 for the inner bearing. The races will be stamped#L68111 for the inner and #L44610 for the outer if the bearings are for a 2000 lb. axle. Regardless, whatever # is stamped on the bearings and races is all the info you need. If you can find Timken bearings, buy them otherwise it's the cheap junk from China most stores stock, they'll work. Just keep an eye on them and check them regularly. Don't forget new rear dust seals, they can be hard to remove without damaging, rendering them useless.