The Hammerite 250ml Red Oxide Primer is a high-quality, robust undercoat designed to provide superior protection from rust and corrosion. This primer is perfect for both interior and exterior surfaces, offering excellent adhesion to ferrous metals. The red oxide formulation enhances the durability of the top coat, ensuring long-lasting results even in harsh weather conditions. Its easy to apply with a brush, roller or spray, providing a smooth finish that improves the appearance of your metal surfaces.