This Detailing Brush Set features two brushes, one for exterior use and one for interior use. Made for heavy-duty cleaning, the brushes are constructed of durable plastic with rubberized grips for optimal control and balance. The exterior brush has shortened white hog hair bristles for deep cleaning and is resistant to both acid and alkaline chemicals. The interior brush has black synthetic bristles and uses split fibre technology for a gentle and effective clean on instrument clusters, vents, and center consoles.