Looks to my like a huge price mistake (Usually sells for $150), however, there are only 9 left in stock. (With more on the way).
https://www.amazon.com/gp/product/B00KCGHSWA
- Aggressively scrubs finishes in preparation for recoating
- Optimized mineral abrasives leave less hazing and scratching than sanding screens
- Surface preparation pad can be used with water or neutral cleaners, eliminating the use of harsh stripping chemicals and leaving no slippery residue
- High-quality nylon fibers are coated throughout the pad with resin and abrasives, providing a consistently aggressive cut
- Versatile pad prepares wood, vinyl tile, sheet vinyl, marble, terrazzo, and concrete floors for finish applications