These bearings are suitable for 8mm axels (most common size) they are 'zz' which means they are sealed on both sides. These types of bearings cannot be cleaned without removing the shields.
These will be a big improvement in free roll from most stock bearings in beginner skates.
This link will take you to an 3rd party website via an afffliate link. If you purchase through this link we will receive a small commission at no extra cost to you.
Skatie Copyright 2021