Review on Bristle Abrasive Coating Attachment Polishing by Jose Mcdaniel

I bought these based on a YouTube video of a Mercruiser headgasket in action. I didn't find them really effective for sealing surfaces compared to wire brushes. But they worked fine for polishing head and manifold bolts (too thick for thread cleaning) and some other work. They held up well on the drill, so they're well made. I just haven't seen enough functional benefit to repurchase this type of abrasive.