My e-scooter, M365 clone (Levy Electric e-scooter) had bad bearings in the rear wheel, probably due to riding in the rain and on salty surfaces roads in winter. These bearings, 6001-2RS, are the size of the rear wheel bearings on this and probably most other m365 clone e-scooters. They appear to be smoother than the original bearings even when they were new! All in all great for my purposes.