This is my second purchase from hook and loop. My first purchase was to try out the sanding pad replacement velcro. I must say that the results were very good. Not only did I replace the velcro on my small sander I also made ten hand sanding blocks out of aluminum using the PSA velcro as a base for my trend sandpaper discs. The best sanding blocks I have ever used. I normally use a bit of wood with sandpaper stapled to it, but never again. I have just purchased some more for replacement of my larger sanders. I might add that this method is a fraction of the price of a new replacement disc. A very good cost-effective product with no drama on delivery or service.