The first step in the Diamabrush Concrete Polishing System involves abrading the surface to prepare it for polishing. The Diamabrush Concrete Prep Tool consists of a super tough 25 or 100 diamond grit that is bonded to a metallic backing and assembled to flexible, steel spring blades. The flexibility of the blade helps ensure that the diamond insert remains in constant contact with the floor, regardless of imperfections to the cracked and damaged floor. This maximizes the effectiveness of the tool. As you use the Concrete Prep Tool, multiple layers of diamonds on the blades are constantly exposed, giving the tool a longer life.