https://www.amazon.co.uk/Micro-Mark-HO-Truck-Tuner/dp/B06XGK5QSG
Is another. IMHO its not as exact as the H&A one, I have got both
DCC concepts do a version too
https://www.dccconcepts.com/product/bearing-reamers-set-of-two/
posted as you did your edit!
The two above are more for me to tweak and or repair a worn bearing.
As you gleamed they set the bearing at the right depth and keeps it square, which sort of helps with getting the axles true.