ProSolve Survey Spray is a high-quality fast drying and hard-wearing acrylic marking paint which is a lead and xylene-free formulation. It's great for use on concrete, tarmac, wood and composites. Used widely in many trades but especially in the construction industry for surveying and road marking etc, in fact anywhere when you need to make clear markings. The unique spray head imparts a narrow spray pattern which will allow letters and numbers to be marked accurately and legibly. The 750ml aerosol line marking solution is extremely durable and is semi-permanent. The paint also dries extremely quickly, so quick in fact that it tests it only takes 30 minutes to dry. This survey line marker comes in black, blue, green, orange, red, white and yellow. Please note that this is a semi-permanent survey line marker. No marking paint is completely permanent and they will all need reapplying at some time. A properly prepared and marked line should last you years, but obviously, this all depen