This electroplated diamond blade will remove tough grout from between tiled surfaces. The efficient shape allows aggressive grinding without damaging the tile. The long-lasting blade enables continuous work on large projects. Also for commercial applications such as cutting out marble and concrete joints as well as for sinking ducts in plaster, brick, pumice, and honeycomb stone as well as autoclave aerated concrete. The arbor on this blade is universal and compatible with Fein MultiMaster , Rockwell Sonicrafter , Craftsman Multi-Tool , Bosch Multi-X , Dremel Multi-Max , and Chicago Multi-Tool . 2-1/2" wide, 2" plunge depth.