Scotch Brite 2x72 Belts

[ddickey]

I see the real 3M belts cost $30 a pop. There is a knock off belt here.
https://www.combatabrasives.com/store/2-x-72-surface-conditioning-belt-kit/
They say the material is the same as they get it from the same supplier which would be 3M. They must buy in bulk rolls and cut their own belts.
Has anyone tried these?

 

[Z2V]

Watching

 

[Silverbullet]

Not used the belts , but I've used plenty of the discs on an air grinder . They work really well but don't last real long. Of course my use was pretty rough cleaning cylinder heads a n d weld slags.