With one natural hog hair brush and one synthetic soft touch brush for delicate surfaces. Both brushes are chemical, alcohol and solvent resistant and will stand up to rigorous use repeatedly without failure. The natural hog hairbrush is the quintessential detailing brush for all heavy cleaning tasks such as exterior trims, badges and heavy soiling while the synthetic soft touch brush has a specially designed split fiber finish to ensure scratch free cleaning on even the most delicate surface such as gloss black plastics, interior trims, dash clocks and screens.