Easily clean the front of your wheels plus the barrel and behind the spokes, too. The bristles of these brushes are extruded in a star-shaped pattern for maximum surface area resulting in better cleaning action. They are soft and flexible to reach into tight areas that are not much larger than the 1/2" nylon coated stem. Bend it to reach around the wheel spokes, hard to reach engine bay locations, intricate grill work, or just about anywhere on your motorcycle. The large brush is 18" long with a 9" x 4 1/4" working size that has 1 7/8" long bristles. The small brush is 13" long with a 5 1/2" x 2 1/2" working size that has 1" long bristles.