These diamond blades will remove tough grout from between tiled surfaces. Efficient shape allows aggressive grinding without damaging the tile.  Long-lasting blade enables continuous work on large projects.  For commercial applications such as cutting out marble and trass concrete joints. Also for sinking ducts in plaster, brick, pumice and honeycomb stone as well autoclave aerated concrete. These premium, long lasting blades are designed specifically for harder grouts. 

SC series: Fein Supercut tools

RW series:  Rockwell Sonicrafter and Worx Sonicrafter Tools

MM series features the Universal Arbor, fits the Bosch Multi-X, Chicago Multi-tool, Craftsman Multi Tool, Dremel Multi-Max, Skil, Fein Multimaster, Ridgid Jobmax, and the Milwaukee Mult tools.