Mini sized Original Drillbrush Power Scrubber. Drill powered scrubbing brush features nylon bristles, rugged construction, and a quarter inch quick-change molded-in steel shaft. This brush fits securely in battery powered drills. Red and black stiff bristles are designed for heavy duty scrubbing and tough stains on tile,grout, garage floors, brick and concrete. -Save time and effort cleaning and scrubbing tile and grout, flooring, concrete, brick and stone. -Durable stiff nylon bristles for heavy duty scrubbing applications in tight spaces and corners. -Same design as the Original Drillbrush Power Scrubber. Now with stiffer bristles and smaller size. -Mini brush features rugged steel, quarter-inch, quick-change shafts. Fits drills AND drivers. -Drillstuff Products have a 90 day no questions Money back Guarantee if not completely satisfied.