Tile and Grout Drill Brush Cordless Drill Power Scrubber Flat brush is good for cleanign Tile, carpet, tires, wheels, and bathroom Fits any cordless drill with quarter inch shaft.Cordless drill NOT included Drill NOT included Durable nylon bristles. Medium stiffness for general purpose scrubbing Black brush is ultra stiff and used for heavy duty cleaning All Drillbrush Products have a 90 day no questions asked Money back Guarantee. If you are not completely satisfied with our product we will issue a full refund or ship out a replacement at the buyer's request. Cordless Drill NOT included.