Multi purpose professional detail brushes. This Bumble Bee Detailing set includes 2 brushes - one boar's hair medium grade bristles and one ultra soft bristles. The bristles are set in plastic ferrules which prevent scratches. The length of boar's hair brush is 9 inch and the ultra soft brush is 6 inch. The boar's hair bristle brush is ideal for cleaning wheel lug nut and any small gap areas. The ultra soft is perfect for cleaning AC vent, dashboard buttons, knobs and cup holder. This is a "detailer's must" brush set.