Our Boar's Hair Wheel Brush is so soft and gentle on your wheels, you'll replace other brushes forever! Wheels require a little extra stiffness due to the amount of brake dust and road tar deposits. I have selected a slightly stiffer boar's hair by choosing an older, more mature hair. The strand is thicker, but the natural "split-end" is still retained for softness. These "split-ends" clean a wheel much better than any other brush. Just a quick shake in water will clean the brush free of brake dust and road grime. With this brush, your hands will stay clean and free from black brake dust. Available in either a 8 1/2" or 20" durable plastic handle.