Hybrid Solutions REACTOR All Wheel Cleaner is a pH-balanced, high-performance iron-reactive cleaner specially formulated to tackle exceptionally dirty wheels with minimal need for brushing. Brake dust composed primarily of iron particles from brake pads and discs, bonds stubbornly to wheels, making it hard to remove with acidic, alkaline, or standard iron-reactive cleaners. REACTOR All Wheel Cleaner contains an active iron-removing ingredient that reacts with baked-on iron particles, making them water-soluble for easy rinsing. Added premium-grade surfactants remove tough grime, traffic film, and general dirt.