Review on BHA Aluminum Oxide Sanding Grinding Power & Hand Tools by Jose Wititsuwannakul

I liked that the abrasive material of the grinding wheel was sharp. I really didn't like that they were deformed (something like a taco shell, but not that much). Couldn't tell if they were warped until you unpacked them. I tried squeezing them between circles of plywood screwed through the hole. It helped a little, but they warped again as soon as I left them on the grinder for a few days. Deformed discs made the plumage very difficult. There was a relapse phase trying to make them as flat as they should be. Not happy with the purchase. I will not buy this model again.