U-Pol Powercan Etch Primer is ideal for priming bare metal surfaces, promoting adhesion of paint and preventing rust. It is typically applied to rub-through areas prior to painting, on bare metal substrates and over bare seams before sealant application. This primer can be applied to bare steel, aluminium, galvanised and zinc coated steels, fully cured paint, polyester body fillers, and G.R.P. The anti-corrosive properties ensure steel surfaces are protected from rusting. This primer can be directly overcoated with a topcoat. Quantity Included: 1 - Sold Individually.