The Chemical Guys Ferret Wheel, Rim & Engine Brush is a fully-synthetic brush perfect for cleaning deep inside OEM and custom wheels. The brush is tough on dirt, grime, and brake dust, yet gentle on painted, chrome, powder coated, and polished wheels. Wheels are notoriously difficult to clean due to their intricate designs, cramped spaces, and heavy contamination. The Ferret Wheel, Rim & Engine Brush is extra-long and extra-slim making it perfect for scrubbing deep inside the barrel of alloy wheels for deep clean and shine. Easily bend and shape the flexible brush rod to fit around brake callipers, into tight spaces, and behind wheel spokes. Soft bristles work to gently lift dirt and grime from wheels for a scratch-free shine. Easily clean away brake dust, dirt, oil, road grime, and more from deep inside wheels, exhaust tips, engine bays.