Help me, ltwoo r9 brake

[Strappacatena]

Hi guys, I need your help. I'm currently changing the handlebar and stem on my GV201 gravel bike. While disconnecting the brakes to redo the internal routing, I noticed that my current setup uses olives and inserts with O-rings (as seen in my photo).



However, the LTWOO tutorial shows them without O-rings.
​Before buying replacements, I did some research and everyone told me they should be like the ones in the tutorial—without the O-ring.
​What should I do? Which ones are the correct ones? If I do need the version with the O-ring, where can I find them? I can't find them in stock on AliExpress, and I'm not sure what keywords to use to find them on Amazon Italy.
​Thanks!

[SirBikealot]

Unless there is complete designchange between the R9 and ER9 - which i doubt - standard Shimano BH59 should work without any problem. No O-ring needed.

[alfiomotrambo]

Yep get some B59 olive https://it.aliexpress.com/item/1005006123044004.html and a press https://it.aliexpress.com/item/1005005989933218.html and you are good to go

[Strappacatena]

I ended up using BH59s... we'll see if I end up hitting a wall