Raizi Vacuum Brazed Diamond Hand Profile Wheel is designed for persons without fabrication experience. With this diamond hand profiler, you can create a beautiful edge profile on porcelain，ceramic tiles, marble, granite，limestone，engineered stone，and quartz stone. You can also use it on concrete countertops when you do DIY. In such cases, life may be shorter because of concrete abrasive nature. The granularity is coarser, and the sharpness is more pronounced, which is suitable for initial grinding. If further polishing is required, you may need to change the grit size or use polishing pads. You can use this diamond hand profilers on any variable speed polishers or grinders with 5/8-11 threaded spindles. A variable speed from 500-4500 RPM central water-feed wet polisher is recommended for this profile application.