Can these ball bearings be cleaned from the inside (inline skating/skating)?

I cleaned the rollers again, so don't worry about it yet xD, but I was wondering if the caps on the ball bearings are removable, even though they appear to be made of metal. What's the situation for you, or does anyone know what these bearings are? Besides, there must be lubricating oil in them…

Looking for inline skates for beginners – any tips?

Hey people, I saw inline skates on sale for €78 and am considering buying them to learn how to inline skate. However, I'm still a beginner and worried about getting injured. Do you have any tips for inline skates that are suitable for beginners? I've also heard that there are fast-rolling inline skates – is…