Koch Chemie Fb Felgenblitz Säurefrei- Rim Cleaner, neutral, viscous, is a powerful pH neutral rim cleaning gel on the basis of a special neural ingredient. Burned in brake dusts, rust traces and other inorganic dirt are removed thoroughly and gently. The viscous setting leads to long adhesion and interaction. The effectiveness is made visible by the indicator (red colouring).With water repelling effect and gloss additives.