Superabrasive's metal bond diamonds provide fast and aggressive cutting and long tool life. We offer them in Quick Change trapezoid style as well as 3" and 4" puck style with velcro attachment. The Quick Change trapezoid pads easily slide in and out of the metal grinding heads without any bolting or extra plates needed. These tools can be used with LAVINA grinders as well as other grinders via a Quick Change adapter plate. Our Quick Change diamonds come in different metal bonds designed specifically for the different types of concrete hardness. To select the correct bond for a specific floor, we recommend using the Mohs Scratch Test kit first to determine the hardness of the concrete.