The 25 grit Double Bar Cha-Ching diamond abrasive tool will create an aggressive profile on concrete in preparation for a coating. It is an economical medium bonded metal abrasive. The 25 grit Double Bar tool is also ideal for removing acrylic sealers, urethane, Polyaspartic and epoxy floor coatings. The double bar shape and position is designed to prepare and remove very aggressively.