When I tried this assortment of abrasive coatings, I was pleasantly surprised by the variety and effectiveness of each attachment. They were easy to install and use, and provided excellent results on a variety of surfaces. As an industrial and scientific user, I appreciate the high quality and durability of these brushes. The only downside is that they do wear down after prolonged use, but that's to be expected with any abrasive product. Overall, I highly recommend these attachments for anyone in need of reliable and versatile abrasive brushes.