The Expo Tools 70510 4mm Glass Fibre Scratch Brush is an essential tool for scale and railway modellers, offering precise cleaning and surface preparation. Equipped with retractable glass fibre bristles, this brush effectively removes rust, corrosion, and oxidation from metal surfaces, ensuring optimal conductivity and paint adhesion. Its pencil-like design provides excellent control, making it ideal for intricate detailing and hard-to-reach areas. Whether preparing track sections, cleaning electrical contacts, or refining model components, this scratch brush enhances the quality and reliability of your modelling projects.