Jiangsu tools 2-1/2-inch Carbide Recessed Segment Grout Blade with Universal Arbor for Fein Multimaster, Dremel, Craftsman, Ridgid, Bosch, Chicago, Milwaukee, Etc. Low cost Segmented 2 1/2 inch carbide blade with universal arbor to fit popular oscillating tools. Material:Carbide Color: gold Width: 64 mm (2.5 inch) Grit:30-80 ; from a reputable source 2.5 inch flush cut rasp removes grout lines and semi-circular design allows to cut into corners Great for removing thin set and thin set mortar, grout , stubborn caulking and glues. Universal arbor / hole pattern - fits Fein Multimaster(R), Dremel , Ridgid, Bosch, etc