Form Fitting Lug Nut Wheel Cleaning Brush with Handle and Removable Insert () Form fitting Lug Nut Wheel Cleaning Brush with handle and removable insert (Brush + 4 Heads) Product Features: Package comes with (1) Lug Nut Brush (4) Replacement Heads Maintaining clean wheels has never been so simple! The secret behind the success of the Recessed Wheel Lug Nut Brush is the unique shape of the foam inserts. When placed on the brush, the foam surrounds the lug nut, cleaning both the lug nut itself and the opening on the wheel. he soft foam holds plenty of soapy water or wheel cleaner to make the job even easier. Replace the foam insert as needed to easily remove brake dust and grime from the lug nut cavity.