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. Part Number: R-M-QC-DS