Genesis GAMT731 1/8-Inch Grout Removal Blade 2-1/2-Inch diameter blade that aggressively and quickly removes material such as grout, plaster and other products from wall tiles or floor surfaces 1/8-Inch thick and is ideal for removing grout or thinset from between tiles Primarily used for "Grinding/Sanding" with your Oscillating Tool Genesis Universal Quick-Fit Oscillating Tool Accessories fit most standard AND tool-free oscillating tools, including the popular Genesis GMT15A