GL FU2 Black DTM HB Primer Gen is a professional-grade, high-build primer designed for direct application to metal surfaces without the need for a separate sealer. This black primer offers excellent corrosion resistance, adhesion, and surface build, providing an ideal base for topcoats in automotive, industrial, and metal fabrication projects. Formulated for fast drying and easy sanding, GL FU2 ensures smooth, durable surfaces with superior protection against rust and environmental damage. Its high-build properties help fill minor surface imperfections, promoting a flawless finish and long-lasting performance in demanding environments.