The high speed rotation of the drill combined with high quality premium heavy duty brush lifts and easily extracts spots from leather and fabric upholstery or carpet. These ultra-premium, heavy duty brushes are available in two varieties to suit your cleaning needs. Each brush is made of 100 percentage polypropylene - the most durable material for brushes. The Chemical Guys yellow standard carpet brush is meant for rigorous scrubbing of durable carpets. The bristles are stiff enough to dislodge old stains and they will hold up better than the soft carpet brush on heavy duty carpet. You can also use this brush on tiles, grout, and floor pads. It is used for general scrubbing and cleaning of carpets, door panels, RV's, and countless applications in the home.