Compact and accurate design: Each Fiberglass Scratch Brush Pen measures 4.53 inch x 0.35 inch x 0.35 inch, enabling precise handling for delicate watch tasks and detail work. Efficient rust removal and polishing: The jewelry cleaning brush tackles rust and corrosion on metal surfaces at varying levels of aggressiveness, allowing effective cleaning without using large tools. Application: Ideal for watchmakers, technicians, collectors, or anyone needing accurate cleaning tools for small metal items. Versatile: The brush is suitable for removing rust, polishing, and detailed cleaning of watch parts. Use scenarios: Cleaning oxidation and rust from tiny screws, pins, and gears in watches during servicing. Polishing and brightening small metal surfaces on watch cases, bezels, and components. Detailing cleaning of micromechanisms in watches or other small metal jewelry components.