Key Features: Lifts and extract dirt safely and easily Stiff bristles for intense scrubbing Durable 100% polypropylene Attaches to 3" Pneumatic Mini Rotary Polisher Cleans carpet, fabrics, upholstery and seats Lifts and extract dirt safely and easily Stiff bristles for intense scrubbing Durable 100% polypropylene 5/16" x 24 Thread This 3. 5" Dia. direct mount rotary brush is a very stiff bristles that cleans carpet, upholstery and seats. This brush is meant for intense scrubbing of durable carpets and hard surfaces. The bristles are stiff enough to dislodge old stains. The high speed rotation of NANOSKIN 3" Pneumatic Mini Rotary Polisher combined with the highest quality premium heavy duty brush lifts and easily extracts spots from fabrics, upholstery and carpet. This brush can also be used on tile and grout in bathrooms and showers. Use this heavy duty brush in removing heavy grease, grime, mold and more. Save time and energy with this heavy duty carpet brush.