Check the listing for details. 4 Inch Diameter Ultra Stiff Nylon Scubber Brush - Heavy Duty Brick/Stone Cleaner. Condition: New. Listed at 8.25 USD. Also works great for cleaning animal cages, farm water buckets, all heavy duty scrubbing1/4 inch quick change shafts fits most drills and driversUltra Stiff nylon bristles also will aggressively remove loose paint, rust and stubborn stains on concrete, stone, metal, and brick.Used for heavy duty industrial stripping and harsh scrubbing applications.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.4 inch diameter round Ultra Stiff drill powered scrub brush. This brush has super stiff and aggressive nylon bristles for the removal of stains on concrete, brick or stone. This brush has very stiff bristles and is NOT recommended for fabric, carpet, or where scratching could be an issue. See our other Drillbrush listings on Amazon. We carry a complete line of drill powered brushes and cleaning pads for around the house, automotive, and Marine applications.Cordless drill NOT included