Dremel Multi-Max MM501 1/16 inch Grout Removal Blade. Grout removal blades are used for removing grout from between wall or floor tiles. Before selecting a grout blade measure the grout line width to pick the appropriate blade. The grout blade is designed so that the blade can remove all grout up to the surface of a wall or corner. Orient the blade on the Multi-Max tool accordingly. Try to keep the grout blade aligned with the grout line and use care to not apply too much side pressure on the grout blade to protect the tile.