The Diamabrush™ patented metallic blade is the perfect tool for concrete preparation. Use this tool with a floor buffer, sander or scrubber machine. Diamond grit is bonded to metallic backing and assembled to a flexible, spring-steel blade. The flexible blade allows the diamond to remain in constant contact with the floor, maximizing the tools effectiveness. Choose the super-tough 25 grit as your first step in the polishing process or for coatings prep. Blades and locking Hub are included!