Made with brazed shards of abrasive carbide material, the 2.5 inch rasp will effectively remove grout lines during a tile replacement project. The MBRC's semi-circular design allow the blade to cut completely into corners without damaging the opposing material. The brazed carbide design allows this products to grind hard materials such as concrete, brick and dried epoxies and paint. Great for removing thin-set and mortar, repairing grout and removing stubborn caulking and glues. Flush cut arbor design for ease of use in demanding situations. The Versa-Tool universal arbor system is compatible with the following brands. Fein Multimaster (All models including FMM250Q, 250, MSx 315 and all models featuring 3/8 inch round arbors), Bosch corded and cordless multi - x, CRAFTSMAN, Chicago Electric, Tool Mate, Power Craft, SECCO, HTC-87, EINHELL, Top Craft, Artwork, MEEC Tools, Man Power, Millarco prof, Westfalia, Falke, Ferm Zwolle Holland, Cougar, Rock Worth, B&Q, Counstructor, Duro, Work Best, Matrix, Pro-Line, Ideenshop, Driving Force, LongActive, VOSS. The Versa-Tool universal arbor system is not compatible with the Fein Supercut, DREMEL or Sonicrafter. Fein, Multimaster, Supercut, Dremel, Sonicrafter, BOSCH, SECCO, Chicago are trademarks of there respective owners.