Marking Blue Engineering Spray is a fast-drying, precision marking solution designed for engineers, metalworkers, and fabricators to clearly mark cutting lines, drill points, and reference marks on steel and metal surfaces. The 300ml aerosol can provides consistent, even coverage with excellent adhesion and visibility, allowing marks to remain clear throughout the machining or fabrication process. Ideal for workshops, fabrication shops, and maintenance teams requiring reliable marking solutions for layout work and quality control.